1.
Estimate. Round to the tens place.
A.
20 + 10 = 30
B.
50 + 20 = 70
C.
30 + 10 = 40
D.
30 + 20 = 50
Hint
2.
Estimate. Round to the tens place.
A.
$80 − $30 = $50
B.
$70 − $30 = $40
C.
$100 − $30 = $70
D.
$70 − $40 = $30
Hint
3.
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 $5 more
B.
about $20 more
C.
about $30 more
D.
about $10 more
Hint
4.
Find 84 + 57.
A.
151
B.
131
C.
27
D.
141
Hint
5.
Find the difference.
A.
50
B.
33
C.
34
D.
35
Hint