Estimate Decimals
Estimate.
2.3 + 3.8 =
2 + 4 = 6
5.3 + 0.96 =
6.26
64.28 - 3.67 =
60.61
Identify the addition property shown below.
16 + 29 + 44 = 16 + 44 + 29
Commutative Property
On Monday, Bonus Book Company earned $303.28. On Tuesday, the company earned $295.73. About how much did Bonus Book Company earn in all? Show your work.
$300 + $300 = $600
Estimate.
69.58 - 32.24 =
70 − 32 = 38
48.6 + 7.22 =
55.82
73.3 - 19.6 =
53.7
Identify the addition property shown below.
(83 + 52) + 46 = 83 + (52 + 46)
Associative Property
Company A has a budget of $13.76 million and Company B has a budget of $24.31 million. What is the difference between the two if each budget is rounded to the nearest tenth of a million?
$10.5 million
Estimate.
4.9 + 2.1 =
5 + 2 = 7
71.29 + 43.68 =
114.97
9 - 5.41 =
3.59
Identify the addition property shown below.
865.72 + 0 = 865.72
Identity Property
Lamar has $28. He spent $13.28 on school supplies. How much money does Lamar have left?
$14.72
Estimate.
78.69 - 23.35 =
79 − 23 = 56
64.87 + 5.01 =
69.88
73.46 - 4.75 =
68.71
Identify the addition property used to rewrite the problem below.
36 + 48 + 52 = 48 + 52 + 36
Commutative Property
The 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
Felix’s dinner costs $16.49. Felix pays with a $20 bill. About how much change does he receive? Show your work.
$20 − $16 = $4
92.39 + 64.78 =
157.17
8 - 6.32 =
1.68
Identify the addition property used to rewrite the problem below.
(74 + 63) + 35 = 74 + (63 + 35)
Associative Property
Last year, Calvin’s batting average was 0.37. Derek’s batting average was 0.29. What was the difference in their averages?
0.08