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5 votes
How do I make a ten to find the sum

2 Answers

4 votes
meaning 10 times 4 witch equals 40
pretty much adding a zero at the end of any number

User Matt MacLean
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3 votes
Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 – 4 = 13 – 3 – 1 = 10 – 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 – 8 = 4); and creating equivalent but easier or ...
User Paul Tarjan
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8.3k points

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