Estimate
Estimate:
2.3+3.8
2+4=6
5.3+0.96
6.26
64.28-3.67
60.61
16+29+44=16+44+29
Commutative
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?
$200+$190=$390 or $202+187=$389
Estimate:
69.58 - 32.24
70-30=40
48.6+7.22
55.82
73.3-19.6
53.7
(83+52)+46=83+(52+46)
Associative
Company A has a budge3t 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?
24.3-13.8=10.5 million
Estimate:
20-16.49
20-16=4
71.29+43.68
114.97
9-5.41
3.59
865.72+0=865.72
Identity
Lamar has $28. He spent $13.28 on school supplies. How much money does Lamar have left?
$14.72
10.47+42.5
10+43=53
64.87+5.01
69.88
53.39-2.54
50.85
(64+79)+48=64+(79+48)
Associative
The coach recorded how fast his runners ran 1 mile. Luisa ran a mile in 8.34 miles, Angie ran a mile in 8.73 minutes, and Rafael ran a mile in 9.27 minutes. How much fast did Luisa run than Rafael?
9.27-8.34=0.93 minutes
Estimate:
57.69-41.35
58-41=17
52.7+9.13
61.83
82.4-13.5
68.9
52+68+38=68+52+38
Commutative
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?
$39.29+$46.54+$14.17=$100