Question

Help !!!! Estimate the number of breaths taken by a person during 44 years?

Answer 1

44 x 12. I got the 12 from the total of 12 months in a year.


44 > 40

x
12 > 10
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The way my teacher taught me how to estimate is look at the neighbor to 44 and 12. The only time 44 can become 50, is when the neighbor is 5 or up. Same thing for 12. Now, multiply 40 and 10.

40 x 10 = 400.

Therefore, your estimate is 400.

The real answer is 520 breaths.