Estimating Fractions and Mixed Numbers
What benchmark fraction is 7/8 closest to?
1
What is the BEST common denominator between 3/8 and 2/3?
24
Find the sum.
1/2 + 2/5
5/10 + 4/10 = 9/10
Find the difference.
4/5 - 1/4
16/20 - 5/20 = 11/20
Estimate the sum by replacing each fraction with 0, 1/2, or 1.
9/10 + 5/6
1 + 1 = 2
1/3 = how many twelfths?
4
Find the sum and simplify your answer.
1/6 + 2/3 + 1/2
1/6 + 4/6 + 3/6 = 8/6 = 1 2/6 = 1 1/3
Find the difference.
4/7 - 1/3
12/21 - 7/21 = 5/21
Estimate the difference by replacing each fraction with 0, 1/2, or 1.
37/40 - 26/50
1 - 1/2 =1/2
Find a common denominator for each pair of fractions. Then, write equivalent fractions with the common denominator.
3/7 and 1/2
6/14 + 7/14 = 13/14
Which equations are true when x is 1/2?
a. 5/5 + x = 3/2
b. 1/10 + 2/5 = x
c. 1/2 + x = 1/4
d. 1/6 + 1/3 =x
a. b. d.
Find the difference and simplify.
4 6/8 - 1 1/2
4 6/8 - 1 4/8 = 3 2/8 = 3 1/4
Estimate the difference using benchmark fractions.
4 5/9 - 1 1/3
4 1/2 - 1 1/2 = 3
Find a common denominator for each pair of fractions. Then, write equivalent fractions with the common denominator.
5/12 and 2/5
25/60 and 24/60
Find the sum.
2 2/5 + 5 5/6
2 12/30 + 5 25/30 =
7 37/30 = 7 + 1 7/30 = 8 7/30
Find the difference.
9 - 6 3/4
8 4/4 - 6 3/4 = 2 1/4
Kim is 3 5/8 inches taller than Colleen. If Kim is 60 3/4 inches tall, what is the best estimate of Colleen's height?
60 3/4 - 3 5/8 = about 61 - 4 = 57.
Which of the following numbers could all be common denominators of 11/12 and 4/5?
12. 17. 30. 60. 125.
30 and 60
Find the sum.
3 11/12 + 9 1/16
3 44/48 + 9 3/48 = 12 47/48
Find the difference.
6 1/3 - 2 3/5
6 5/15 - 2 9/15 =
5 20/15 - 2 9/15 = 3 11/15