Common Core: 1.OA.A.1
Problem 15 of 27g1-015
Leo has 9 marbles. Ava has 4 marbles. How many more marbles does Leo have than Ava?
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Solution walkthrough0:50
- Leo has 9 marbles. Let us count them: 1, 2, 3, 4, 5, 6, 7, 8, 9.
- Ava has 4 marbles. We line them up under Leo: 1, 2, 3, 4.
- Match them up. Leo has 5 extra marbles with no partner: 1, 2, 3, 4, 5.
- To find how many more, count only the extras with no partner. Great job!