Decimal Basics
Fractions
Percents
Conversions (F–D–P)
Scientific Notation
100
3.48
Round 3.476 to the nearest hundredth.
100
7/100
Write 0.07 as a fraction in simplest form.
100
8.66
Compute: 12.5 − 3.84
100
0.048
Compute: 0.6 × 0.08
100
$2.10
A bill is $47.90. You pay with $50.00. How much change should you get?
200
2/3
Simplify 12/18.
200
11/5
Convert 2 1/5 to an improper fraction.
200
7/8
Add: 3/4 + 1/8
200
3/4
Multiply: (5/6)(9/10)
200
1/4
Divide: 5/6 ÷ 10/3
300
$9
What is 15% of 60?
300
$30
A shirt costs $40 and is discounted 25%. What is the sale price?
300
15%
A value increases from 200 to 230. What is the percent increase?
300
20%
You tip $18 on a $90 meal. What percent tip is that?
300
$137.60
Sales tax is 7.5%. What is the total cost of a $128 purchase (before tax)?
400
0.6
Convert 3/5 to a decimal.
400
45%
Convert 0.45 to a percent.
400
1.2
Convert 120% to a decimal.
400
35%
Convert 7/20 to a percent.
400
0.6, 65%, 2/3
Order from least to greatest: 2/3, 0.6, 65%.
500
4.5 × 10^6
Write 4,500,000 in scientific notation.
500
0.00032
Write 3.2 × 10^−4 as a decimal.
500
1.2 × 10^9
Compute (6 × 10^5)(2 × 10^3) in scientific notation.
500
3 × 10^−6
Compute (9 × 10^−2) ÷ (3 × 10^4) in scientific notation.
500
6.0 × 10^5 m
If light travels at 3.00 × 10^8 m/s, how far does it travel in 0.0020 s (scientific notation)?
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