Decimal Operations
Fraction Sense
Percent Conversions
Percent Applications
Scientific Notation
100
5.55
Compute 3.4 + 2.15.
100
0.75
Write 3/4 as a decimal.
100
0.45
Write 45% as a decimal.
100
10
Find 20% of 50.
100
4.5 x 10^4
Write 45,000 in scientific notation.
200
7.85
Compute 8.6 - 0.75.
200
3/4
Simplify 18/24.
200
8%
Write 0.08 as a percent.
200
$68
An item costs $80 and is discounted 15%. What is the sale price?
200
0.0062
Write 6.2 x 10^-3 in standard decimal notation.
300
12.75
Compute 4.25 x 3.
300
3/2 or 1 1/2
Compute 2/3 + 5/6.
300
60%
Write 3/5 as a percent.
300
30%
18 is what percent of 60?
300
8.1 x 10^-5
Write 0.000081 in scientific notation.
400
7
Compute 6.3 / 0.9.
400
1 3/10 or 1.3
Compute 1 3/5 - 3/10.
400
1.25
Write 125% as a decimal.
400
25% increase
A value grows from 120 to 150. What is the percent increase?
400
6 x 10^7
Compute (3 x 10^4)(2 x 10^3).
500
0.5005, 0.505, 0.55
Place these decimals in ascending order: 0.505, 0.55, 0.5005.
500
5/3 cups or 1 2/3 cups
A recipe uses 2/3 cup of oats per batch. How many cups are needed for 2 1/2 batches?
500
37.5%
Write 0.375 as a percent.
500
$135.00
A $125 purchase has 8% sales tax. What is the total cost?
500
4 x 10^4
Compute (8.4 x 10^6) / (2.1 x 10^2).
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