Rounding/Estimating
Adding Fractions
Subtracting Fractions
Adding Mixed Numbers
Subtracting Mixed Numbers
100

Round to the nearest 0, 1/2, or 1

5/8

1/2

100

3/9 + 4/9

7/9

100

8/12 - 3/12

5/12

100

1 5/16 + 10 1/6

12

100

6 7/8 - 2 2/8

4 5/8

200

Round to the nearest 0, 1/2, or 1

10/12

1

200

5/6 + 1/9

17/18

200

7/8 - 1/3

13/24

200

8 1/14 + 3 1/2

11 3/4

200

5 2/3 - 3 1/4

2 5/12

300

Estimate by rounding each mixed number to the nearest whole number

8 9/15 + 4 2/5

9 + 4 = 13

300

4/9 + 3/4

1 7/36

300

4/5 - 1/6

19/30

300

12 3/5 + 1 7/10

14 3/10

300

14 1/15 - 11 4/15

2 4/5

400

Estimate by rounding each mixed number to the nearest whole number


16 5/8 - 3 7/16

17 - 3 = 14

400

2/9 + 3/8

43/72

400

7/8 - 2/9

47/72

400

5 5/6 + 9 3/7 

15 11/42

400

4 1/6 - 2 7/18

1 7/9

500

Elizabeth is finding the dimensions of her bedroom door. The bedroom door is 6 3/8 feet tall and 2 5/8 feet wide. What is the best estimate for how much taller is the bedroom door than it is wide?

About 3 feet

500

A man buys 2/3 pounds of carrots, 3/4 pounds of asparagus, and 1/6 pounds of cabbage. How many pounds did the man buy altogether?

1 7/12 pounds

500

Estrella spent the weekend reading. On Friday night, she read for 1/3 hour. On Saturday, she read for 1/6 hour, and on Sunday she read for 1/4 hour. How many hours did Estrella spend reading?

3/4 hour

500

Jay and David are calculating their combined height. Jay is 5 3/4 feet tall, and David is 6 1/8 feet tall. What is Jay and David's combined height?

11 7/8 feet

500

Tina is making a frame for a picture she drew. The length of the picture is 11 1/9 inches, and the width of the picture is 7 1/4 inches. How much longer is the picture than it is wide?

3 31/36 inches