Question

A length of string is 42 1/2 inches long.

A teacher needs to make 8 equal
length pieces from the string. How
long should she make each piece?

A- 5 5/16 inches

B- 8 1/2 inches

C- 21 1/4 inches

D- 34 1/2 inches

Answer 1

Answer: 5 5/16 inches

Explanation:

3 ways to get this.

1. Estimate. You know that 8 × 5 is 40, and 40 is close to 42. 40 ÷ 8 is 5

There is only one answer close to that so choose A.

2. Calculate. Change the numbers to a decimal and divide: 42.5 ÷ 8 = 5.3125

3 . Fraction multiplication and division: Make 42 1/2 into an "improper fraction"

and multiply. 85/2 × 1/8 = 85/16 Divide "old style" long division to get a remainder. 85 ÷ 16 = 5, remainder 5. Put the remainder 5 over the divisor 16 to end up with 5 5/16

Answer 2

5 5/16

Explanation:

you just divide 42 1/2 by 8