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Fractions
Decimals
Percents
Scientific Notation
Mixed Skills
100
3/4
Compute 1/2 + 1/4.
100
1.85
Compute 0.6 + 1.25.
100
35%
Write 0.35 as a percent.
100
5.2 × 10^3
Write 5,200 in scientific notation.
100
15%
Write 3/20 as a percent.
200
2/3
Simplify 12/18.
200
2.35
Compute 3.2 - 0.85.
200
9
Find 20% of 45.
200
4.1 × 10^-3
Write 0.0041 in scientific notation.
200
25%
A price 40 to 50: percent increase?
300
2/3
Compute 3/5 × 10/9.
300
0.012
Compute 0.4 × 0.03.
300
25%
15 is what percent of 60?
300
6 × 10^5
Evaluate (2×10^3)(3×10^2).
300
3.2 × 10^-4
Write 0.00032 in scientific notation.
400
3/2
Compute 2/3 ÷ 4/9.
400
30
Compute 4.5 ÷ 0.15.
400
88
Increase 80 by 10%.
400
4 × 10^4
Evaluate (8×10^6)/(2×10^2).
400
3×10^-1
Which is larger: 4×10^-2 or 3×10^-1?
500
0.875
Write 7/8 as a decimal.
500
2.35
Round 2.346 to hundredths.
500
-30% (30% decrease)
From 50 to 35: percent change?
500
0.075
Write 7.5×10^-2 as decimal.
500
$27
Tax 8% on $25: total?