Question

Martin had 7 pounds of grape left, and he gave away 2/5 of them. Explain how to use compatible numbers to estimate the amount of grapes he gave away

Answer 1

`7 * (2)/(5) = (14)/(5) \\ \\ (14)/(5) = 2 (4)/(5)`

Answer : 2 4/5 grams.

Hope this helps. - M

Answer 2

2/5 is close to 1/2 , and it is easy to find 1/2 of 7 mentally. Half of 7 is 3.5, so Martin gave away about 3.5 pounds.

Explanation:

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