Decimal Differences
Decimal Products
Decimal Quotients
Multiply Fractions and Mixed Numbers
Divide Fractions and Mixed Numbers
100
7.1 - 0.01
7.09
100
To multiply decimals, this is one method you can use. . .
1. Make the decimals into whole numbers first by multiplying by powers of ten, then multiply the whole numbers, then divide by what you multiplied by

OR

2. Turn the decimals into fractions, then multiply them and convert back to decimals. 


100
5 divided by 8
0.625
100

Evaluate 2/3 x 4/6?  Simplify your answer.

What is 4/9?

100

Evaluate 4/5 ÷ 1/10.  Simplify your answer.

What is 8?

200
4.13 - 3.71
0.42
200
1.2 x 3.1
3.72
200
1 divided by 3
0.33 repeating
200

Evaluate 1/3 x 12.  Simplify your answer.

What is 4?

200

Evaluate 8 ÷ 1/2.  Simplify your answer.

What is 16?

300
1 - 0.007
0.993
300
1.65 x 11
18.15
300
330.4 divided by 0.8
413
300

Evaluate 2 4/5 x 6.  Simplify your answer.

What is 16  4/5?

300

Evaluate 2 1/4 ÷ 3/4.  Simplify your answer.

What is 3?

400
1 - 0.5208
0.4792
400
One way to compute a 15% tip for a bill at a restaurant is to multiply by 0.15 


Calculate the bill for a meal that cost $41.20

(You can also use a percent bar or ratio table if you prefer.)

$6.18
400
13.164 divided by 0.4
32.91
400

Evaluate 2 1/3 x 3 4/5.  Simplify your answer.

What is 16 5/8?

400

Evaluate 3 3/4 ÷ 1 4/5.  Simplify your answer.

What is 2 1/3?

500

Bill ran 4.231 miles, John ran 6.43 miles, and Jim ran 7.1 miles. Jim ran how much further than Bill?

2.869 miles
500
0.005 x 0.43
0.00215
500
12 cupcakes cost $29.00


Find the unit price to the nearest cent.

$2.42


500

Lucie can walk about 3 4/5 miles each hour.  Calculate how far she can walk in 2 hours and 45 minutes.

What is 10 9/10 miles?

500

Otto put 12 4/9 pounds of electrical supplies into crates.  Each crate held 1 7/9 pounds of supplies.   Calculate how many crates Otto uses.

What is 7 crates?

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