Multiplication Patterns
612.5 × 0.1
61.25
Estimate the product
4.2 x 6.7
about 28
Multiply the decimals:
9.5 x 4.2
39.9
A newly hatched fish is 0.35 inch long. An adult fish is 8.4 times as long as the newly hatched fish. How long is the adult fish?
2.94 inches
30.1 × 102
3,010
Use estimation and partial products to help you solve.
4.65 × 7.8 = _____
36.27
Multiply the decimals:
0.2 x 0.8
0.16
A notebook costs $2.85. You buy 3 notebooks and give the cashier $10. How much change do you receive?
$1.45
8.6 × 1000
8600
Which expressions are equivalent to 0.6 × 0.8?
(6 × 8) × (0.1 × 0.1)
(6 × 8) × (0.1 × 0.01)
(6 × 0.1) × (8 × 0.1)
(6 × 8) × (1/10 x 1/10)
(6 × 8) × (0.1 × 0.1)
(6 × 0.1) × (8 × 0.1)
(6 × 8) × (1/10 x 1/10)
Multiply the decimals:
5.8 x 0.3
1.74
One pound of potatoes costs $4.56. You buy a jar of soup for $6.41 and 3.5 pounds of potatoes. How much do you spend in all?
$ 22.37
0.004 x 103
4
Write an equation to represent this model
*see attached
0.14 x 3 = 0.42
Multiply the decimals:
40.8 x 9.5
387.6
Newton buys a guitar for $46 and a guitar amplifier. The amplifier costs $1.54 more than 1.26 times the cost of the guitar. How much does the amplifier cost?
$ 59.50
3.57 x 0.001
0.00357
Use a model to find the product
0.3 x 0.2
0.06
Multiply the decimals:
6.81 x 2.5
17.025
A McDonalds employee earns $12.30 per hour for the first 30 hours he works in 1 week. He is paid 2.5 times that rate for each additional hour that he works. How much money does he earn working for 35 hours in 1 week?
$ 522.75