Adding Decimals
Inverse Operation
multiplying decimals
dividing decimals
word problems
100

13.45 + 12. 99

26.44

100

What is the inverse equation?

12.3 + 5.7=


18- 5.7=12.3

or

18-12.3=5.7

100

12.3 x 4

49.2

100

12.45 divided by 5

2.49

100

Carla has $34. 12 to spend. She wants to split her money equally to buy dinner over 2 days. How much money does she get for each day?

$17.06

200

98.27 + 14.52

112.79

200

What is the inverse equation?

67.89-12.52

55.37 + 12.52 = 67.89

200

12.06 x 7 

84.42

200

18.99 divided by 9

2.11

200

There are 5 children going to the movies. Each student needs to give $35.10 for the movie. How much money do they need to pay all together?

$175.50

300

19.72 + 18.01

37.73

300

What is the inverse equation?

12 x 3 


36 divided by 3 is 12 

or 

36 divided by 12 is 3

300

152 x 0.3

45.6

300

18.74 divided by 2 

9.37

300

There are 3 people running a mile. The total amount they need to run is 99.63 miles. How much will each person run?

33.21 miles each 

400

27.44 + 15.62

43.06

400

What is the inverse equation?

144 divided by 2 

2 x 72 = 144

400

19.05 x 5

95.25

400

56.36 divided by 4

14.09

400

There are 19 people in the art club. Each student needs to give $13.75 for supplies. How much money does the school need to collect from the art club?

$261.25

500

211.09+12.1

123.19

500

What is the inverse equation?

1,863 divided by 9

207 x 9 = 1,863

500

67.4 x .42

28.308

500

88.99 divided by 11 

8.09

500

Ms.Astacio bought $216.21 worth of groceries for the week.How much does each days groceries cost her?

$32.07 per day

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