1.
Use estimation to place the decimal point in the product
18.7 × 21 = 3927.
A.
39.27
B.
392.7
C.
3927.0
D.
3.927
Hint
2.
Find 4.2 נ7.5.
A.
3.15
B.
0.315
C.
31.4
D.
31.5
Hint
3.
A full tank of gasoline costs $17.45. If the car has a 12-gallon tank, approximately how much does a gallon of gasoline cost?
A.
$0.145
B.
$1.45
C.
$1.54
D.
$14.50
Hint
4.
Find 9.72 ÷ 1.2.
A.
81
B.
8.1
C.
810
D.
0.81
Hint
5.
Multiply 0.032 × 2.1.
A.
0.672
B.
0.064
C.
0.0672
D.
672
Hint