Find the Sum
Word Problems
Find the Difference
Estimation
100

Add the decimals 43.28 + 31.45

74.73

100

Jane bought her mom a gift that cost $10.57 and her dad a gift that cost $15.22. How much did she spend in all for her parents?

$25.79

100

Subtract the decimals 43.28 - 31.45

11.83

100

Estimate the difference.

68.35 - 52.1 

70 - 50 = 20


200

Add the decimals 0.724 + 6.45

 7.174

200

Sally's mom bought 5 pounds of flour to make cookies for the 5th grade class. She used 2.75 pounds for the recipe. How much flour does she have left?

2.25 pounds

200

Subtract the decimals 6.45 - 2

 4.45

200

Estimate the sum. 

45.6 + 21.4

50 + 20 = 70

46 + 20 = 66

300

Add the Decimals 1.32 + 0.081

 1.401

300

Mr. Johnson roof measures 56.89 feet. How many feet will he need to buy if the package only give the measurement to the nearest ones.

57 feet

300

Subtract the Decimals 1.32 - 0.081

1.239

300

Estimate the sum of $4.28, $21.35, and $14.65 by rounding each number to the nearest tenth. 

$40.40

400

Add the decimals: 6 + 0.402

 6.402

400

Amber combined 15.29 ounces of Sprite and 1.37 ounces of strawberry drink to make a Christmas punch. How many ounces of punch will she have altogether?

16.66 ounces

400

Subtract the decimals 148.3 - 121.36

26.94

400

Two rock samples have masses of 56.24 grams and 8.98 grams. What is the estimated total mass if you round the decimals to the nearest tenth? 

65.2 grams

500

Add the Decimals: 19.8+.231

 20.031

500

Jeffery has $36.45 to spend at the mall for presents. He buys a gift for his sister that cost $10.49 and a toy for his brother that cost $13.50. How much money will he have left?

$12.46

500

Subtract the decimals 248 - 31.48

216.52

500

A rectangular yoga studio is 25.15 feet long and 13.62 feet wide.

Round the length and width to the nearest whole number. Then estimate the perimeter of the yoga studio. Write an equation to model your work.

25+25+14+14= 78 feet

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