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Decimal and Fractions

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Ron read 1/4 of a book on Day 1, 5/8 of the book on Day 2, and finished the book on Day 3. What decimal represents the fraction of the book he finished on day three? I think the answer is 1/8. Please show provide step-by-step instructions to solve this problem.

A piece of cloth is 10.5 centimeters long. What mixed number represents this length? I think the answer is 10 1/2. Please provide step-by-step instructions to solve this problem.

A straw is 10.75 inches long. If cut into 2 equally-sized pieces, what is the length of each piece? I think the answer is 5.375 inches long. Please provide step-by-step instructions to solve this problem.

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Solution:

Your answer is correct.
Take a look at the steps.
Day 1 = ¼
Day 2 = 5/8
Day 3 = 1 - (1/4 + 5/8)
= 1- ((2 + 5)/8) (Took LCD of 4 and 8 is 8)
= 1- 7/8
Day 3 = 1/8
Day 3 = 0.125
0.125 represents Day 3 ...

Solution Summary

This solution shows step-by-step calculations to solve three questions on fractions and decimals.

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