1.
Find 4.2 × 7.5.
A.
31.4
B.
3.15
C.
0.315
D.
31.5
Hint
2.
Find 1.16 × 0.8.
A.
9.28
B.
0.0928
C.
92.8
D.
0.928
Hint
3.
A cave in the Ukraine is 131.73 miles long. The Mammoth Cave system in Kentucky is 2.695 times the length of the Ukraine cave. Approximately how long is the Mammoth Cave system?
A.
35,501 mi
B.
355 mi
C.
3,550 mi
D.
36 mi
Hint
4.
Find 23.8 × 2.7.
A.
68.2
B.
6.426
C.
64.26
D.
6.28
Hint
5.
Write the multiplication sentence represented by the decimal model below.
A.
0.4 × 0.8
B.
0.4 × 8
C.
4 × 8
D.
4 × 0.8
Hint