Which is greater:
9/10 or 2/5?
9/10
Estimate, using benchmarks of 0, 1/2, and 1
1/8+3/5
1/2
What could you use as a common denominator for this pair of fractions?
1/3 and 5/6
6 (or 12 or 18 or ...)
3/5 + 1/5
4/5
1/2 - 3/8
1/8
Which is greater:
9/13 or 7/13?
9/13
Estimate, using benchmarks of 0, 1/2, and 1
7/8+11/12
2
What could you use as a common denominator for this pair of fractions?
5/9 and 1/2
18
1/2 + 3/8
7/8
3/5 - 1/5
2/5
Which is greater:
5/12 or 5/14?
5/12
Estimate, using benchmarks of 0, 1/2, and 1
9/11-3/7
1/2
What is the lowest common denominator for this pair of fractions?
3/4 and 7/10
20
2/5 + 1/4
13/20
2/5 - 1/4
3/20
Which is greater:
9/20 or 21/40?
21/40
Estimate, using benchmarks of 0, 1/2, and 1
3/25+14/15
1
What is the lowest common denominator for this pair of fractions?
11/15 and 9/10
30
5/9 + 1/6
13/18
5/9 - 1/6
7/18
Which is greater:
17/13 or 11/12?
17/13
Estimate, using benchmarks of 0, 1/2, and 1
3 1/7- 1 3/8
1.5
What is the lowest common denominator for this pair of fractions?
6/7 and 1/6
42
7/8 + 11/12
43/24
11/12 - 7/8
1/24