KComparing NumbersK.CC.C.6

More, Fewer or the Same

Match or count to compare two groups.

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You know how to count how many. Now let’s compare two groups. Which one has more?

Which row has more? Press “Match them up” to pair each top star with a bottom star.

Key idea

Match one from each group. The group with extras has more. The other has fewer. If nothing is left over, they are the same.

Why it works

Matching pairs things up like partners. A thing with no partner is extra, so its group has more.

Worked example: Apples and pears

There are 6 apples and 4 pears. Which has more?
  1. Match each pear with an apple.
  2. 2 apples have no partner.
  3. There are more apples and fewer pears.

Answer: More apples

The stars are spread out, but there are still fewer stars. Count both rows to check.

Common mistake

Saying the longer, more spread-out row has more. Spreading things out does not add any! Match them up, or count both groups.
For grown-ups: Set out two rows of coins, one row spread out. Ask which has more, then match them up together to check.

Practice

Pass with 3 right answers, the last 2 in a row. Each right answer earns 1 XP.

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Sources and further reading

  • Common Core State Standards for Mathematics, Kindergarten, K.CC.C.6: tell whether one group has more than, fewer than or the same as another, by matching or counting
  • Institute of Education Sciences practice guide: Teaching Math to Young Children (NCEE 2014-4005)
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