Question

a tailor need three pieces of favric 1.68 yard 15 yard and 1.26 yard estimate how many yards of metal he should buy to the nearest yard

Answer 1

18 yd

Explanation:

The sum of the three lengths rounded to the nearest yard is ...

... 2 yd + 15 yd + 1 yd = 18 yd

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Comment on this result

In this case, this also happens to be the rounded value of the actual sum (17.94 yd ⇒ 18 yd). Sometimes, rounding the addends results in an error in the total, because rounding can introduce a bias if the numbers are not uniformly distributed.