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valina [46]
3 years ago
5

Estimate then find the difference or sum 86+17

Mathematics
1 answer:
kumpel [21]3 years ago
8 0
Estimation for addition: 86 rounds up to 90 and 17 rounds up to 20 so:
90 + 20 = 110
Estimation for subtraction is the same thing but with subtraction
90 - 20 = 70

Now for the exact answers:
86 + 17 = 103
86 - 17 = 69

Your answers are 110, 70, 103, and 69.

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