1.
Round 439 to the nearest hundred.
A.
500
B.
440
C.
430
D.
400
Hint
2.
Round 382 to the nearest hundred.
A.
380
B.
300
C.
400
D.
390
Hint
3.
How can you use the Commutative and Associative Properties of Addition to add 4, 7, and 5?
A.
It does not matter which two numbers are added first (Associative Property) or in which order they are added (Commutative Property).
B.
The Commutative Property tells you always to work from left to right, and the Associative Property tells you to add.
C.
It does not matter which two numbers are added first (Commutative Property) or in which order they are added (Associative Property).
D.
The Associative Property tells you always to work from left to right, and the Commutative Property of Addition tells you to add.
Hint
4.
Estimate the sum of 65 + 12 using rounding.
A.
70 + 20 = 90
B.
60 + 10 = 70
C.
70 + 10 = 80
D.
65 + 10 = 75
Hint
5.
Estimate the sum of 61 + 37 using rounding.
A.
60 + 30 = 90
B.
60 + 35 = 95
C.
70 + 30 = 100
D.
60 + 40 = 100
Hint
6.
Find the sum.
A.
53
B.
63
C.
13
D.
73
Hint
7.
Find the sum.
$26 + $34 = ___
A.
$58
B.
$510
C.
$50
D.
$60
Hint
8.
Find the sum.
19¢ + 29¢ = ___
A.
58¢
B.
318¢
C.
38¢
D.
48¢
Hint
9.
Find the sum.
278 + 187 = ___
A.
455
B.
365
C.
355
D.
465
Hint
10.
Why is it smart to check answers for reasonableness?
A.
Checking for reasonableness uses the Identity Property.
B.
Many careless mistakes can be caught this way.
C.
Using estimation to check your answers gives exact results.
D.
Any mistake can be caught by using estimation to check your answers.
Hint
11.
Find the sum.
465 + 2,576
A.
2,931
B.
6,112
C.
3,041
D.
2,941
Hint
12.
Find the sum.
$71.48 + $26.61 = ___
A.
$108.09
B.
$98.19
C.
$97.09
D.
$98.09
Hint
13.
Find the sum mentally.
5 + 9 + 5
A.
15
B.
21
C.
14
D.
19
Hint
14.
Find the sum.
A.
51
B.
60
C.
61
D.
50
Hint