Decimals
Fractions
Percents
Scientific Notation
Mixed Review
100
18.5
Round 18.472 to the nearest tenth.
100
2/3
Simplify 12/18.
100
0.35
Write 35% as a decimal.
100
4.5 × 10^6
Write 4,500,000 in scientific notation.
100
0.6 and 60%
Convert 3/5 to a decimal and a percent.
200
4.23
Add 3.45 + 0.78.
200
5/8
Add 1/4 + 3/8.
200
12
Find 15% of 80.
200
0.00032
Write 3.2 × 10^-4 in decimal form.
200
0.8
Which is greatest: 0.8, 3/4, or 78%?
300
0.024
Multiply 0.06 × 0.4.
300
2 5/12
Subtract 5 1/6 − 2 3/4.
300
25% increase
A price goes from $50 to $62.50. Find the percent increase.
300
6 × 10^5
Multiply (2 × 10^3)(3 × 10^2).
300
100% increase
A bacteria culture doubles from 250 to 500. Find the percent change.
400
8.4
Divide 5.04 by 0.6.
400
1/6
Multiply 7/9 × 3/14.
400
$56
A jacket is discounted 30% from $80. Find the sale price.
400
4.2 × 10^4
Divide 8.4 × 10^7 by 2 × 10^3.
400
3/8 cup
Half of 3/4 cup of sugar is how much?
500
19/8 or 2 3/8
Write 2.375 as a fraction in simplest form.
500
3
Divide 2 1/2 by 5/6.
500
75%
18 out of 24 students passed. What percent passed?
500
6.9 × 10^-2
Which is larger: 7.1 × 10^-3 or 6.9 × 10^-2?
500
25% decrease
A town decreases from 1.2 × 10^5 to 9 × 10^4 people. Find the percent decrease.
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