Arithmetic practice problems

Whole numbers, fractions, decimals and percentages: the number sense every later course relies on. Each problem below has a full solution whose steps and answer come from the exact math engine.

Factors and Multiples

Prime factorization, greatest common factor and least common multiple.

Easy

Find the greatest common factor of 12, 18 and 24.

Compare prime factorizations and keep the shared primes.

Easy

Find the least common multiple of 4 and 6.

The smallest number both divide into.

Medium

Find the least common multiple of 8, 12 and 18.

Take each prime at its highest power.

Practise with: GCF Calculator, LCM Calculator

Fractions

Simplify, add, subtract, multiply and divide fractions and mixed numbers.

Easy

Compute

\frac{1}{2} + \frac{1}{3}

Fractions need a common denominator before adding.

Easy

Compute

\frac{3}{4} - \frac{2}{3}

Rewrite both over twelfths.

Practise with: Fraction Calculator, GCF Calculator, LCM Calculator

Percentages

Percent of a number, percent change and reverse percentages.

Easy

What is 15% of 80?

Convert the percentage to a decimal and multiply.

Easy

12 is what percent of 48?

Divide the part by the whole.

Practise with: Percentage Calculator

More practice

All practice problems in other subjects.
Step-by-step solver for your own problems, with hints and answer checking.