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Estimating Sums of Single Digit Numbers Which of the following represents the most accurate estimation of 4 + 8? is the answer 5, 10, 20 or 25
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Estimating Sums of Single Digit Numbers

Which of the following represents the most accurate estimation of 4 + 8? is the answer 5, 10, 20 or 25

User Brittonv
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1 Answer

3 votes
10
We can round 4 down to 0 since it is less than 5 and round 8 up to 10 since it is greater than 5. Giving:
0 + 10 = 10
User Matt Hanson
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