4.1 and 4.2 Review

Addition

100

2.6 + 4.9

7.5

200

13.3 + 14.28

27.58

300

4.352 + 3.26

7.612

400

13.385 + 14.25

49.635

500

29.16 + 4.22+0.7

34.08

Subtraction

100

3.8 - 2.5

1.3

200

12.3 - 10.9

1.4

300

5.36 - 4.28

1.08

400

138.39 - 26.8

111.59

500

46 - 43.28

2.72

Multiplication

100

2.7 x 2

5.4

200

3 x 2.4

7.2

300

5 x 1.21

6.05

400

6.7 x 1.5

10.05

500

9.74 x 3.2 

31.168

Real World Problems

100

Candy Leftovers:  A large bag contained 18.45 pounds of Halloween candy. After a school event, students had eaten 12.8 pounds.  

How many pounds of candy were left?

5.65 pounds

200

A soccer player runs 2.4 miles during each practice. She attends 5 practices this week.

How many miles did she run in all?

12 miles

300

Mason spent 2.75 hours playing video games on Friday and 3.6 hours playing on Saturday.

How many hours did Mason play video games altogether?

6.35 hours

400

A video game takes up 12.5 gigabytes of storage. An updated version of the game requires 1.4 times as much storage.

How much storage does the updated game require?

12.5 × 1.4 = 17.5 gigabytes

500

For a Pink Out game, students made 18 bracelets. Each bracelet used 0.35 yards of ribbon. They also used an additional 1.2 yards of ribbon for decorations.

How many yards of ribbon did they use altogether?

18 × 0.35 = 6.3 yards
6.3 + 1.2 = 7.5 yards