Name:
Understanding Multiplying By 10s & 100s
Determine the answer to the following problems.
A n s w e r s
1) If 7 × 9 = 63 , then 7 × 900 =
1.
2) If 4 × 1 = 4 , then 400 × 1 =
2.
3) If 7 × 8 = 56 , then 7 × 800 =
3.
4) If 9 × 1 = 9 , then 900 × 1 =
4.
5) If 4 × 4 = 16 , then 4 × 40 =
5.
6) If 7 × 6 = 42 , then 70 × 6 =
6.
7) If 9 × 9 = 81 , then 9 × 90 =
7.
8) If 5 × 5 = 25 , then 500 × 5 =
8.
9) If 8 × 2 = 16 , then 8 × 200 =
9.
10) If 4 × 9 = 36 , then 40 × 9 =
10.
11) If 9 × 8 = 72 , then 9 × 80 =
11.
12) If 9 × 5 = 45 , then 900 × 5 =
12.
13) If 7 × 4 = 28 , then 7 × 40 =
13.
14) If 7 × 3 = 21 , then 700 × 3 =
14.
15) If 6 × 7 = 42 , then 6 × 700 =
15.
16) If 4 × 6 = 24 , then 400 × 6 =
16.
17) If 7 × 5 = 35 , then 7 × 50 =
17.
18) If 8 × 9 = 72 , then 80 × 9 =
18.
19) If 8 × 3 = 24 , then 8 × 30 =
19.
20) If 2 × 1 = 2 , then 20 × 1 =
20.
95 90 85 80 75 70 65 60 55 50
1-10
5
Math
45 40 35 30 25 20 15 10
5
0
11-20