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More, Fewer, or the Same Amount · Number Sense · CCSS.MATH.CONTENT.K.CC.C.6 · Comparing Groups

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More, Fewer, or the Same Amount

with Lumi

Lumi stands at a sunny picnic table in a park, carefully placing bright red apples and yellow bananas side by side in a long row, matching each apple to one banana with a cheerful smile.

Match items from two groups one-to-one to compare them.
Identify which group has more, fewer, or the same number of items.
Show what leftover items tell us after matching two groups.
Compare two groups of objects (up to 10 items each) without counting, using one-to-one matching.

Key terms

one-to-one matching: Pairing one item from each group so every item has a partner.
more: The group with leftover items after matching has more items.
fewer: The group that runs out of partners first has fewer items.
equal: Two groups with no leftovers at all have the same amount.

Why Matching Works

Matching one-to-one lets you compare two groups even when the items are different shapes, sizes, or colors. By giving each item a partner, you can see at a glance which group has extra items left over. Whatever group still has items when the other has run out is the bigger group, no counting needed.

Reading the Leftovers

After you match every pair you can, look carefully at what is left. Leftovers always belong to the group that has more — they never jump to the other side. If neither group has leftovers, the two groups are equal. The leftovers are the clue that tells you exactly which group wins the comparison.

Worked examples

Compare 4 apples and 3 bananas by matching.

Match each apple with one banana.
Three pairs are made, then bananas run out.
One apple is left over with no partner.

Answer: Apples have more, bananas have fewer.

Compare 4 cars and 4 boats by matching.

Match each car with one boat.
Every car gets a partner and every boat gets a partner.
No items are left over on either side.

Answer: The groups are equal.

Hi, I am Lumi! Today we are going to compare two groups. Here is my trick: line up one item from each group side by side. We call this matching one-to-one. If one group runs out first and the other still has items left over, the group with leftovers has MORE. The group that ran out has FEWER. If both groups run out at exactly the same time — no leftovers at all — then both groups have THE SAME amount! You do not have to count. Just match and look. Does one side have extras? That side has more. No extras on either side? They are the same! Let us try it together. I have 4 apples and 3 bananas. I match apple-banana, apple-banana, apple-banana... one apple is left over! So apples have MORE and bananas have FEWER. Now it is your turn — you will match apples and bananas the same way. Drag each apple next to one banana. When one group has no more partners, stop and look at what is left over!

Activity

Drag each apple to match it with one banana. See which group has leftovers when you run out of partners.

Practice

Match 6 cups with 4 plates and tell which group has more.

Lily has 5 hats and 5 mittens; are the groups equal or not?

Common mistakes to avoid

Bigger items mean moreThe size of each item does not matter; only the number of items after matching tells which group has more.
Leftovers belong to the smaller groupLeftover items always belong to the group with more, because that group still had items when the other ran out.

Check your understanding

Mia has 5 strawberries. Sam has 3 grapes. They match them one-to-one. Which is true?

Leo has 4 toy cars. Ava has 4 toy boats. They match them one-to-one. What happens?

After matching two groups one-to-one, Group A has 2 items left over. What does that tell us?

Recap

To compare two groups, match one item from each side until one group runs out. The group with leftovers has more, the group that ran out has fewer, and no leftovers at all means the groups are equal.

Reflect

When could matching things one-to-one help you share fairly with a friend?