Use benchmarks to estimate the sum, difference, or pruduct. 14/16 + 1/5

A. 2

B. 0

C. 1/2

D. 1


7 1/7 - 1 9/10

A. 9

B. 4

C. 5

D. 6


Use benchmarks to estimate the sum, difference, or product

7 2/7 x 3 7/9

A. 32

B. 28

C. 24

D. 21


Find the sum

3/9 + 4/9

A. 7/9

B. 7/18

C. 7/81

D. 2/3


-3/4 + 15/24

A. -3/4

B. 1/2

C. 1/8

D. -1/8


12 1/9 + 10 2/3

A. 22 1/6

B. 22 7/9

C. 22 1/9

D. 22 1/4


-1/5 + (-3/7

A. -22/35

B. - 1/3

C. 12/35

D. 4/7

Dexter read 11 science fiction books and 5 history books. lena read 9 science fiction books and 4 history books. compare the students’ ratios of science fiction books to history books. 1. determine the ratios’ form:    science fiction books to history books 2. write the ratios as fractions:    dexter: 115; lena: 94 3. rewrite with a common denominator. 4. compare. 5. answer the question. determine which shows the correct comparison of the ratios for this problem.