Placing Decimals With Multiplication Worksheet With Answer Key Page 7
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9Name:
Placing Decimals with Multiplication
Determine the placement of the decimal in each product.
A n s w e r s
4
5
3
1
0
2
5.809 × 7.8 =
9.42
1.
1. Count the quantity of numbers to the right of the
2. Add the amounts together. Your answer
decimal for each factor.
should have the same quantity of numbers
to the right of the decimal.
29.01451
5.809 has 3 numbers right of the decimal (5.809)
2.
3 + 1 = 4
7.8 has 1 number right of the decimal (7.8)
5.089 (3) × 7.8 (1) = 45.3102 (4)
43.837
3.
Also notice that 5 × 7 = 35 and 6 × 8 = 48 , so 5.809 × 7.8 will be a more than 35 but less than 48.
36.893
4.
.
1) 3 × 3.14 =
9
4
2
3.4
5.
.
2) 8.819 × 3.29 =
2
9
0
1
4
5
1
16.562
.
6.
3) 5.9 × 7.43 =
4
3
8
3
7
.
27.463
4) 4.67 × 7.9 =
3
6
8
9
3
7.
.
5) 2 × 1.7 =
3
4
10.1156
8.
.
6) 9.8 × 1.69 =
1
6
5
6
2
4.665
9.
.
7) 9.47 × 2.9 =
2
7
4
6
3
34.0
.
10.
8) 7.6 × 1.331 =
1
0
1
1
5
6
.
46.89333
9) 3.11 × 1.5 =
4
6
6
5
11.
.
10) 4 × 8.5 =
3
4
0
10.23178
12.
.
11) 8.31 × 5.643 =
4
6
8
9
3
3
3
30.345
13.
.
12) 5.98 × 1.711 =
1
0
2
3
1
7
8
9.1615
.
14.
13) 8.67 × 3.5 =
3
0
3
4
5
.
2.668
14) 7.3 × 1.255 =
9
1
6
1
5
15.
.
15) 1 × 2.668 =
2
6
6
8
27.0996
16.
.
16) 4.4 × 6.159 =
2
7
0
9
9
6
47.538
17.
.
17) 5.7 × 8.34 =
4
7
5
3
8
26.9075
18.
.
18) 4.7 × 5.725 =
2
6
9
0
7
5
.
47.226
19) 9.26 × 5.1 =
4
7
2
2
6
19.
.
20) 6.19 × 3.4 =
2
1
0
4
6
21.046
20.
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