Ray's New Practical Arithmetic: teaching guides on Teddy Rook Bookhttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/Recent content in Ray's New Practical Arithmetic: teaching guides on Teddy Rook BookTeddy Rook Bookhttps://teddyrookbook.com/img/share.jpghttps://teddyrookbook.com/img/share.jpgHugoenSun, 11 Oct 2026 00:00:00 +0000Lesson 1: Units, numbers and the ten figureshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-1/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-1/Lesson 10: Adding two columns at oncehttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-10/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-10/Lesson 100: United States revenue: internal revenue and dutieshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-100/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-100/Lesson 101: Ratio: finding the ratio and a missing termhttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-101/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-101/Lesson 102: Ratio principles; lowest terms; clearing fractionshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-102/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-102/Lesson 103: Proportion: terms and finding the fourth termhttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-103/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-103/Lesson 104: Simple proportion (the Rule of Three)https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-104/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-104/Lesson 105: Compound proportionhttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-105/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-105/Lesson 106: Partnership, bankruptcy and general averagehttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-106/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-106/Lesson 107: Partnership with timehttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-107/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-107/Lesson 108: Equation of payments and averagehttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-108/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-108/Lesson 109: Involution: squares, cubes and powershttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-109/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-109/Lesson 11: Subtraction and borrowinghttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-11/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-11/Lesson 110: Evolution: roots, and pointing off for square roothttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-110/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-110/Lesson 111: Extracting the square roothttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-111/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-111/Lesson 112: Square root by factoring; right triangles; side of a squarehttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-112/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-112/Lesson 113: Cube root: periods and the methodhttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-113/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-113/Lesson 114: Cube root practice; the side of a cubehttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-114/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-114/Lesson 115: Lines, angles, figures; area of a parallelogramhttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-115/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-115/Lesson 116: Areas of trapezoids, triangles and irregular figureshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-116/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-116/Lesson 117: The circle: circumference and areahttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-117/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-117/Lesson 118: Solids: surface and volume of prisms and cylindershttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-118/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-118/Lesson 119: Pyramids, cones and sphereshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-119/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-119/Lesson 12: The rule for subtraction and its proofhttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-12/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-12/Lesson 120: Mensuration at work: tradesmen, lumber, masonry and binshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-120/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-120/Lesson 121: Arithmetical progressionhttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-121/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-121/Lesson 122: Geometrical progressionhttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-122/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-122/Lesson 13: Mixed adding and subtractinghttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-13/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-13/Lesson 14: What multiplication ishttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-14/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-14/Lesson 15: Multiplying by one figurehttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-15/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-15/Lesson 16: Multiplying by large numbershttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-16/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-16/Lesson 17: Multiplication story problemshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-17/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-17/Lesson 18: Short cuts in multiplicationhttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-18/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-18/Lesson 19: What division ishttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-19/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-19/Lesson 2: Hundreds and higher ordershttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-2/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-2/Lesson 20: Short divisionhttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-20/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-20/Lesson 21: Long divisionhttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-21/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-21/Lesson 22: Long division practice and reviewhttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-22/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-22/Lesson 23: Short cuts in divisionhttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-23/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-23/Lesson 24: Principles of divisionhttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-24/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-24/Lesson 25: Mixed problemshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-25/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-25/Lesson 26: Compound numbers and U.S. moneyhttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-26/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-26/Lesson 27: Changing dollars, cents and millshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-27/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-27/Lesson 28: Adding and subtracting moneyhttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-28/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-28/Lesson 29: Multiplying moneyhttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-29/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-29/Lesson 3: Place value and periodshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-3/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-3/Lesson 30: Dividing moneyhttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-30/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-30/Lesson 31: Money problems of every kindhttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-31/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-31/Lesson 32: Reading and checking a billhttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-32/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-32/Lesson 33: Dry measure and the rules for reductionhttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-33/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-33/Lesson 34: Liquid measure and avoirdupois weighthttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-34/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-34/Lesson 35: Long measurehttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-35/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-35/Lesson 36: Square measure and the area of a rectanglehttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-36/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-36/Lesson 37: Cubic measurehttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-37/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-37/Lesson 38: Time measurehttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-38/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-38/Lesson 39: Miscellaneous tableshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-39/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-39/Lesson 4: Writing large numbershttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-4/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-4/Lesson 40: Measure problems of every kindhttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-40/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-40/Lesson 41: Adding compound numbershttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-41/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-41/Lesson 42: Subtracting compound numbershttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-42/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-42/Lesson 43: Time between dateshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-43/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-43/Lesson 44: Multiplying compound numbershttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-44/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-44/Lesson 45: Dividing compound numbershttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-45/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-45/Lesson 46: Longitude and timehttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-46/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-46/Lesson 47: Factors and prime numbershttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-47/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-47/Lesson 48: Prime factors and common factorshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-48/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-48/Lesson 49: Greatest common divisorhttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-49/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-49/Lesson 5: Reading large numbershttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-5/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-5/Lesson 50: Least common multiplehttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-50/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-50/Lesson 51: Cancellationhttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-51/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-51/Lesson 52: What a fraction ishttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-52/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-52/Lesson 53: Kinds of fractions and their principleshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-53/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-53/Lesson 54: Reduction of fractions, Cases I–IIIhttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-54/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-54/Lesson 55: Higher terms, lowest terms, common denominatorshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-55/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-55/Lesson 56: Adding fractionshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-56/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-56/Lesson 57: Subtracting fractionshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-57/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-57/Lesson 58: Multiplying fractionshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-58/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-58/Lesson 59: Dividing fractionshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-59/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-59/Lesson 6: Roman numeralshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-6/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-6/Lesson 60: Fractions with money and measureshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-60/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-60/Lesson 61: Fraction problems of every kindhttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-61/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-61/Lesson 62: Practice (aliquot parts)https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-62/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-62/Lesson 63: What decimals arehttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-63/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-63/Lesson 64: Writing and reading decimalshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-64/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-64/Lesson 65: Reduction of decimals: ciphers, and decimals to common fractionshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-65/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-65/Lesson 66: Changing a common fraction to a decimalhttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-66/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-66/Lesson 67: Adding decimalshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-67/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-67/Lesson 68: Subtracting decimalshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-68/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-68/Lesson 69: Multiplying decimalshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-69/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-69/Lesson 7: Adding without carryinghttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-7/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-7/Lesson 70: Dividing decimalshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-70/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-70/Lesson 71: Decimal compound numbers (measures)https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-71/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-71/Lesson 72: Decimals: promiscuous (mixed) exampleshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-72/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-72/Lesson 73: The metric system: names and measures of lengthhttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-73/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-73/Lesson 74: Metric land, capacity and weighthttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-74/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-74/Lesson 75: Metric and old measures comparedhttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-75/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-75/Lesson 76: Per cent, and the words of percentagehttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-76/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-76/Lesson 77: Finding the percentage and finding the ratehttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-77/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-77/Lesson 78: Finding the basehttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-78/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-78/Lesson 79: Percentage formulas and mixed problemshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-79/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-79/Lesson 8: Carrying, the rule and the proofhttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-8/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-8/Lesson 80: Applications of percentage: commissionhttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-80/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-80/Lesson 81: Trade discounthttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-81/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-81/Lesson 82: Profit and losshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-82/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-82/Lesson 83: Stocks, brokerage, assessments and dividendshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-83/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-83/Lesson 84: Stock values, gold, and investment incomehttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-84/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-84/Lesson 85: Interest: the words, and interest for yearshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-85/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-85/Lesson 86: Interest for months and for dayshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-86/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-86/Lesson 87: Interest for years, months and dayshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-87/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-87/Lesson 88: The twelve per cent methodhttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-88/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-88/Lesson 89: Finding the time and finding the ratehttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-89/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-89/Lesson 9: Addition story problemshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-9/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-9/Lesson 90: Finding the principal, and the interest formulashttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-90/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-90/Lesson 91: Compound interest and annual interesthttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-91/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-91/Lesson 92: Partial paymentshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-92/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-92/Lesson 93: Discount, bank notes and days of gracehttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-93/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-93/Lesson 94: Bank discount and proceedshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-94/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-94/Lesson 95: True discount and present worthhttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-95/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-95/Lesson 96: Drafts and domestic exchangehttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-96/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-96/Lesson 97: Foreign exchange: pounds, francs and markshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-97/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-97/Lesson 98: Fire, marine and life insurancehttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-98/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-98/Lesson 99: State and local taxeshttps://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-99/Sun, 11 Oct 2026 00:00:00 +0000https://teddyrookbook.com/homeschool/rays-arithmetic/practical/lesson-99/