Free topic
Fractions
Find common denominators, multiply across, invert-and-multiply for division, simplify with the GCD, and convert between mixed numbers and improper fractions — the foundation under every tape-measure read.
Worked Example
1/3 + 1/4
Given: Different denominators
- 1
Common denominator 12
1/3 = 4/12 ; 1/4 = 3/12
Worked Example
(2/3) ÷ (4/9)
Given: Divide fractions
- 1
Flip second
(2/3) × (9/4)
Timed Game · 6 problems
02:00
Answer 6 problems in 2 min. Timer auto-stops.