How to use it
- Multiply the number by 10.
- Take half of that result.
See it in action
68 × 5 = 680 ÷ 2 = 340.
How to verify it
5 is half of 10, so the result should be half of 680.
Multiply by 5 Fast
Multiplying by 5 is the same as multiplying by 10 and dividing by 2.