Easy Decimals
Multiply by 10 or 100
Word Problems
Estimation
Challenge Problems
100

0.4 × 3

1.2

100

3.4 × 10

34

100

A notebook costs $7.99. You buy 12 notebooks.
How much do you spend?

$95.88

100

Estimate: 2.9 × 4.1

about 12

100

17.88 x 8.7

155.556

200

1.5 × 4

6

200

0.56 × 10

5.6

200

Each piece of ribbon is 1.5 meters long. You cut 13 pieces.
How many meters of ribbon do you use?

19.5 meters 

200

Estimate: 5.2 × 3.7

about 20

200

13.59 x 59.852

813.38868

300

2.3 × 2

4.6

300

4.3 × 100

430

300

A bottle of juice costs $6.99. You buy 5 bottles.
How much do you spend?

$34.95

300

Estimate: 1.8 × 6.3

about 12

300

27.45 x 65.8

1806.21

400

0.8 × 6

4.8

400

0.78 × 100

78

400

A bag of apples weighs 3.5 pounds. You buy 8 bags.
What is the total weight?

28 pounds

400

Estimate: 3.6 × 2.2

about 8

400

87.99 x 15.50 

1363.845

500

3.2 × 24

76.8

500

6.25 × 10

62.5

500

Each ticket costs $13.99. A family buys 9 tickets.
How much do they spend?

$125.91

500

Estimate: 4.7 × 5.1

about 25

500

130.879 x 95.26

12467.53354