Decimals!

Addition

100

.4 + .9

.13

200

.12 + .56

.68

300

12.9 + 31.8

44.7

400

456.1 + 45.5

501.6

500

5,456.78 + 549.24

6,006.02

Subtraction

100

.8 - .3

.5

200

.96 - .45 = 

.51

300

54.2 - 26.1

28.1

400

854.5 - 54.8

799.7

500

2,145.87 - 624.9

1,520.97

Multiplication

100

.4 x 9

3.6

200

4.5 x 7

31.5

300

12 x .87

10.44

400

671 x .65

436.15

500

4.56 x 61.3

279.528

Word Problems

100

Samuel ran 8.16 miles on Monday and 4.25 miles on Tuesday. How far did he run in all?

12.41 Miles 

200

Timothy can sing Happy Birthday in 8 seconds. Clifford can sing it in 7.43 seconds. Who can sing Happy Birthday faster? By how much?

Timothy, by .57 seconds

300

Jackson has 8 gallons of water. He uses 1.38 gallons of water on his first day. How much water does Jackson have left?

6.62 gallons

400

Jan bought 7 apples at the grocery store for $1.34 each. She then bough 3 oranges for $1.19 each. How much money did she spend all together? 

$12.95 

500

Jimmy bought his class 17 toys for Christmas. Each toy cost $4.98 each. He then bought toys for another class of 12 kids. He spent $3.21 each on their toys How much did all the toys cost Jimmy? 

$98.28

Mystery Equation!

100

What is the sum of 12.4 and 7.1?

19.5

200

What is the product of 23.6 and 7?

165.2

300

What is the difference between 87.2 and 1.9?

85.3

400

What is the product of 234.6 and 9.6?

2,252.16

500

What is the product of 87.9 and 2.34?

205.686