Explain how you could estimate 22% of 78 to check if your answer is reasonable

Question

Mathematics

Gunnar Medina

8 July, 22:17

Explain how you could estimate 22% of 78 to check if your answer is reasonable

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Wade · Answer 1

What I think you could do is round the numbers you have to something reasonable, especially if you're not supposed to use a calculator. SO round 22% down to 20% and then round 78 up to 80, then solve. With the estimate you should get 16, which should be close to the answer you would get if you took 22% of 78.