Ray's New Primary Arithmetic · Lesson LXXIX · Unit 8: Money, weights and measures
79. United States money
Goal: Your child knows that 10 cents make a dime and 10 dimes make a dollar, and changes one into the other.
You'll need
- Real pennies, dimes and a dollar bill if you have them
- A slate, small whiteboard or paper and pencil
What's in the book
The table: 10 cents make 1 dime; 10 dimes make 1 dollar; 10 dollars make 1 eagle. Then problems such as "How many cents in 3 dimes?" (worked: 30 cents) and "How many dimes in 60 cents?" (worked: 6).
The lesson, step by step
Real coins
Trade 10 pennies for a dime. Then count dimes to a dollar.
The eagle
An "eagle" was a ten-dollar gold coin. It is no longer made, but it is a fun piece of history.
Book problems
Work through the page.
Today's coins
Add what the book leaves out: nickels (5 cents) and quarters (25 cents).
Afterwards
Let your child count the coins in a jar.
Answers to the book's problems
1. 30 cents. 2. 30; 70. 3. 6 dimes. 4. 60, 80, 40. 5. 4, 6, 9. 6. 10; 80. 7. 3 dimes. 8. 4 dimes. 9. 5 dollars. 10. 90 cents; 9 dimes.
Worked out for this site from the scan. If a number in your copy differs, trust the book.