Estimating
Use front end estimation to find the estimated sum.
3,538 + 87 =
3,080
2,352,875 + 543,465 =
2,896,340
Are the following decimals equivalent? Yes or No? Explain why to your partner.
2.080 2.008
No.
Which property of addition is shown?
Zero Property of Addition
Associative Property of Addition
Commutative Property of Addition
45 + 0 = 45
Zero Property of Addition
Solve for y.
27 + y = 43
y = 16
Estimate the difference by rounding to the nearest whole.
63.236 - 12.5 =
50
5.1 - 3.578
1.522
Create an equivalent decimal.
5.34
One of the following would be correct:
5.340
5.3400
5.34000
Which property of addition is shown?
Zero Property of Addition
Associative Property of Addition
Commutative Property of Addition
(21 + 4) + 9 = 34
21 + (4 + 9) = 34
Associative Property of Addition
Solve for p.
p - 45 = 21
p = 66
Estimate by rounding to the greatest place value and then adding.
5,383.56 +97,632
105,000
5.6 - 4.6000
1
Fill in the blank with <, >, or =
0.09 ___ 0.0900
=
Which property of addition is shown?
Zero Property of Addition
Associative Property of Addition
Commutative Property of Addition
(2 + 6 + 4) = (6 + 4 + 2)
Commutative Property of Addition
Solve for t.
t + 17 = 99
t = 82
Round to the nearest tenth to find the estimated difference.
15.26 - 2.438
12.822
106,453.2 - 8,529
97,924.2
Fill in the blank with <, >, or =
5.2500 ___ 5.52
<
Fill in the blank.
253 + 690 + 840 = 690 + 840 + _____
253
Solve for g
54 - g = 29
g = 25
Round to the nearest hundredth to find the difference.
16.555 - 3.5451
13.01
62,636 - 27.535
62,608.465
Are these equivalent decimals? Yes or No?
2.20069 2.206009
No
Show the associative property of addition to find the sum.
85 + 3 + 17
(85 + 3) + 17 = 105
85 + (3 + 17) = 105
b - 346 = 276
b=70