Estimation
Decimal Addition
Decimal Subtraction
Problem Solving
100

Estimate the sum of 

87.2 + 3.9

(Round to the nearest whole number)

91

100

1.03 + 0.36

1.39

100

13.8 - 3.9

9.9

100

For her birthday, Lucy received $20 from her mom and $15 from her grandma. She bought a book for $10.85, so how much does she have left?

$24.15

200

Estimate 788.9 - 572

(Round to the nearest hundred)

200

200

9.1 + 7.21

16.31

200

3.5 - 2.38

1.12

200

Jeff earned $65 doing yard work. He bought a pair of jeans for $31.25 and a sweatshirt for $16.50. He set aside the money leftover to buy a gift for his cousin. How much did he set aside?

$17.25

300

Estimate 2.8 + 4.7

8

300

16.3 + 55.75

72.05

300

92.7 - 5.59

87.11

300

Michael set out on a 4.2 mile long trail. He walked 0.8 miles before taking his first water break, then ran 1.3 miles more. How much of the trail does he have left to complete?

2.1 miles

400

Estimate  $12.99 - $3.95

(Round to the nearest whole number)

$9.00

400

4.3 + 2.88 + 1.7

8.88

400

85.22 - 43.5

41.72

400

Mary earned $26 babysitting and was given $32 more for her birthday. She goes to the store to purchase a hat for $12.79 and a purse for $21.99. How much money does she have left?

$23.22

500

Estimate 3.7 + 4.1 + 3.3

11

500

88.8 + 4.27 + 78.95

172.02

500

50 - 28.38

21.62

500

Paul went to the grocery store and bought 2 bags of chips for $3.75 each. He also bought a large bag of apples for $6.89. 

He paid for part of his total with a $10 gift card. How much does he still owe the cashier?

$4.39