Rounding
Estimating
Addition
Subtraction
Random
100

4.35; tenths

4.4

100

2.3 + 3.8 

2 + 4 = 6

100

25 + 8.46

33.46

100

73.3 - 19.6

53.7

100

Identify the addition property used to rewrite the problem below. (74 + 63) + 35 = 74 + (63 + 35)

Associative Property

200

19.25; ones

19

200

69.58 - 32.24

70 − 32 = 38

200

63.8 + 8.12

71.92

200

64.28 - 3.67

60.61

200

Identify the addition property used to rewrite the problem below. 36 + 48 + 52 = 48 + 52 + 36

Commutative Property

300

17.92; tens

20

300

11.36 + 52.6

11 + 53 = 64

300

64.87 + 5.01

69.88

300

8.1 - 6.32

1.78

300

A coach recorded how fast his runners ran 1 mile. Luisa ran a mile in 8.34 minutes, Angie ran a mile in 8.73 minutes, and Rafael ran a mile in 9.27 minutes. How much faster did Luisa run than Rafael?

0.93 minute

400

107.358; hundredths 

107.36

400

Felix’s dinner costs $16.49. Felix pays with a $20 bill. About how much change does he receive?

$20 − $16 = $4

400

71.29 + 43.681

114.971

400

9 - 5.41

3.59

400

Katrina bought a pair of jeans for $39.29 and a sweater for $46.54. She received $14.17 in change. How much money did Katrina have originally?

$100

500

10,214.435; ones

10,214

500

On Monday, Tarmac Jean Company earned $202.19. On Tuesday, the company earned $186.62. About how much did Tarmac Jean Company earn in all? (round to ones place)  

$202 + $187 = $389

500

Marco purchased 1.25 yards of flannel fabric and 3.15 yards of fleece fabric. How many total yards of fabric did Marco purchase?

4.4 yards

500

Lamar has $28. He spent $13.28 on school supplies. How much money does Lamar have left?

$14.72

500

Becky's baby brother weighs 8.42 pounds. How much more than 10 pounds will her brother weigh if he gains 0.7 pounds each week for the next 3 weeks. 

0.52 pounds (a total of 10.52 pounds) 

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