1.
Estimate. Round to the tens place.
A.
30 + 20 = 50
B.
50 + 20 = 70
C.
20 + 10 = 30
D.
30 + 10 = 40
Hint
2.
Estimate. Round to the tens place.
97 − 34
A.
90 − 30 = 60
B.
90 − 50 = 40
C.
90 − 40 = 50
D.
100 − 30 = 70
Hint
3.
Estimate. Round to the tens place.
$54 + $21
A.
$75 + $25 = $100
B.
$60 + $30 = $90
C.
$50 + $30 = $80
D.
$50 + $20 = $70
Hint
4.
Kayla wants to buy a DVD movie that costs $23 and a music CD that costs $18. She has $32. About how much more money does she need to buy the items?
A.
about $20 more
B.
about $5 more
C.
about $10 more
D.
about $30 more
Hint
5.
Find the sum.
A.
81
B.
82
C.
71
D.
17
Hint
6.
Find 84 + 57.
A.
151
B.
131
C.
27
D.
141
Hint
7.
Grayson ran 23 miles in his first week of an exercise program. The second week, he ran 28 miles. How many miles did he run altogether?
A.
51 miles
B.
52 miles
C.
41 miles
D.
61 miles
Hint
8.
Find the difference.
A.
50
B.
35
C.
34
D.
33
Hint
9.
Find the difference.
A.
$14
B.
$33
C.
$16
D.
$15
Hint
10.
Imelda’s vacation webpage received 84 hits over the weekend. On Saturday, she recorded 37 hits. How many hits were there on Sunday?
A.
57
B.
37
C.
47
D.
121
Hint