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Multiplication Patterns
Multiplication with a Decimal and Whole Number
Decimal Multiplication
Zero in the Product
Draw a Diagram or Decimal Model
100
1 x 34.26 = 10 x 34.26 = 100 x 34.26 = 1,000 x 34.26 =
34.26 342.6 3,426.0 34,260.0
100
2.4 x 3 =
7.2
100
3.4 x 2.1 =
7.14
100
0.5 x 0.5 =
0.25
100

For breakfast, Sally ordered apple juice that cost $1.75. She also ordered a cinnamon roll that cost 2 times as much as the apple juice and a chicken biscuit that cost $2.50 more than the cinnamon roll. How much did the chicken biscuit cost?

$6.00

200
1 x 189 = 0.1 x 189 = 0.01 x 189 =
189 18.9 1.89
200
4.7 x 6 =
28.2
200
7.8 x 9.5 =
74.1
200
0.3 x 0.8 =
0.24
200

Robby bought a puzzle for $5.47. He bought a book that cost 3 times as much as the puzzle. He also bought a board game that cost $2.23 more than the book. How much did the board game cost?

$18.64

300
1 x 37.621 = 10 x 37.621 = 100 x 37.621 = 1,000 x 37.621 =
37.621 376.21 3,762.1 37,621.0
300
11.3 x 5 =
56.5
300
5.64 x 1.7 =
9.588
300
0.04 x 0.7 =
0.028
300
Amy's savings account has a balance of $58.45 in January. By March, her balance is 5 times as as much as her January balance. Between March and September, Amy deposits a total of $82.67. If she does not withdraw any money from her account, what should Amy's balance be in November?
$374.92
400
1 x 5 = 0.1 x 5 = 0.01 x 5 = 0.001 x 5 =
5 .5 .05 .005
400
47.23 x 8 =
377.84
400
21.78 x 4.3 =
93.654
400
0.09 x 0.7 =
0.063
400
0.9 x 0.7 =
0.63
500
1 x 10 = 0.1 x 10 = 0.01 x 10 = 0.001 x 10 =
10 1.0 .1 .01
500
28 x 4.7 =
131.6
500
95.16 x 7.2 =
685.152
500
0.06 x 0.8 =
0.048
500
0.4 x 1.5 =
0.60