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Decimals
Fractions
Percents
Scientific Notation
Mixed Skills
100
9/200
Write 0.045 as a fraction in simplest form.
100
0.375
Convert 3/8 to a decimal.
100
12.79
Round 12.786 to the nearest hundredth.
100
0.57
Which is greater: 0.57 or 0.507?
100
1.55
Compute 1.2 + 0.35.
200
3/4
Simplify 18/24.
200
1 3/8 (or 11/8)
Add 3/4 + 5/8.
200
3/5
Multiply 2/3 x 9/10.
200
2 1/2 (or 2.5)
Divide 5/6 by 1/3.
200
1 2/5
Convert 7/5 to a mixed number.
300
0.62
Convert 62% to a decimal.
300
25%
What percent of 80 is 20?
300
$36
Find 15% of 240.
300
20%
The price drops from $50 to $40. What is the percent decrease?
300
$129.60
Increase $120 by 8%. What is the new amount?
400
4.5 x 10^6
Write 4,500,000 in scientific notation.
400
32,000
Write 3.2 x 10^4 in standard form.
400
5.6 x 10^-4
Convert 0.00056 to scientific notation.
400
6 x 10^5
Multiply (2 x 10^3)(3 x 10^2).
400
3.2 x 10^4
Divide 6.4 x 10^7 by 2 x 10^3.
500
3/4
A recipe needs 0.75 cup sugar. Express this as a fraction.
500
65%
A phone battery at 40% gains 25 percentage points. New percent?
500
0.45, 48%, 1/2
Order from least to greatest: 1/2, 0.45, 48%.
500
$4.20
A 12% tip on a $35 meal is how much?
500
9.3 x 10^9
Express 9,300,000,000 in scientific notation.