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Decimals
Fractions
Percents
Scientific Notation
Mixed Skills
100
What is 3/8?
Write 0.375 as a fraction in simplest form.
100
What is 3/4?
Simplify 18/24.
100
What is 45%?
Convert 0.45 to a percent.
100
What is 4.5 x 10^6?
Write 4,500,000 in scientific notation.
100
What is 0.6, 62%, 5/8?
Order 0.6, 5/8, and 62% from least to greatest.
200
What is 18.75?
Round 18.746 to the nearest hundredth.
200
What is 1/2?
Add 2/5 + 1/10.
200
What is 12?
Find 15% of 80.
200
What is 0.00032?
Write 3.2 x 10^-4 in decimal form.
200
What is $0.30 per ounce?
A 12-ounce product costs $3.60. What is its unit price per ounce?
300
What is 6.487?
Compute 6.4 + 0.087.
300
What is 5/8?
Subtract 7/8 - 1/4.
300
What is 20%?
A price rises from $50 to $60. Find the percent increase.
300
What is 8 x 10^8?
Multiply (2 x 10^3)(4 x 10^5).
300
What is 82,400?
A population of 80,000 grows by 3%. What is the new population?
400
What is $18?
A $24 item is discounted by $6. What is the sale price?
400
What is 2/3?
Multiply 3/7 by 14/9.
400
What is 20%?
A score drops from 90 to 72. Find the percent decrease.
400
What is 2 x 10^5?
Divide 6 x 10^7 by 3 x 10^2.
400
What is 0.80 or 4/5?
Evaluate 3/4 + 0.2 - 15%.
500
What is 8.25 cups?
A recipe uses 2.75 cups of flour. How many cups are needed for 3 batches?
500
What is 12?
A class has 18 students; 2/3 are present. How many are present?
500
What is $60?
After a 25% discount, a jacket costs $45. Find the original price.
500
What is 6.9 x 10^9?
Compare 7.1 x 10^8 and 6.9 x 10^9. Which is greater?
500
What is 4.8 x 10^6?
A bacteria count is 2.4 x 10^6. It doubles. Write the result in scientific notation.