Decimal Sums
Decimal Differences
Decimal Products
Long Division
Decimal Quotients
100
2.34 + 0.1
2.44
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
72 divided by 3
24
100
5 divided by 8
0.625
200
0.04 + 1.309
1.349
200
4.13 - 3.71
0.42
200
1.2 x 3.1
3.72
200
894 divided by 3
298
200
1 divided by 3
0.33 repeating
300
.99 + 1.1
2.09
300
1 - 0.007
0.993
300
1.65 x 11
18.15
300
3012 divided by 4
753
300
330.4 divided by 0.8
413
400
0.0005 + 0.00079
0.00129
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
4248 divided by 18
236
400
13.164 divided by 0.4
32.91
500
Bill ran 4.231 miles, John ran 6.43 miles, and Jim ran 7.1 miles. The total running distance of the three runners is. . .
17.761
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
204,096 divided by 48
4252
500
12 cupcakes cost $29.00


Find the unit price to the nearest cent.

$2.42


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