Grade 1 math · C.10 · Addition and Subtraction to 20
Add three numbers
Add the three numbers. Look for two that make ten.
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2 + 2 + 3 =
Answer: 7
4 + 2 + 4 =
Answer: 10
2 + 2 + 1 =
Answer: 5
Tip: Add the three numbers. Look for two that make ten.
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