Step by step
- Write each number as a fraction2 = 2/1
- Keep, change, flipKeep the first fraction, change ÷ to ×, and flip the second fraction upside down:2/1 ÷ 2/5 = 2/1 × 5/2
- Multiply the tops, then the bottoms(2 × 5)/(1 × 2) = 10/2
- SimplifyDivide the top and bottom by 2: 10/2 = 5
Check: 5 × 2/5 = 2 ✓