GurooHow to multiply by 5 in your head
Multiplying by 5 is the same as multiplying by 10 and halving, because 5 is half of 10. Most children find 10s and halves easy.
▶ Try it in the app, no sign-up
Download the free worksheet (PDF)
Worksheet includes an answer key for grown-ups
How it works
- Multiply by 10 (add a zero).
- Halve the answer.
Worked example
8 × 5: 8 × 10 = 80. Half of 80 is 40. So 8 × 5 = 40.
Top tip
For even numbers you can halve first: 14 × 5, half of 14 is 7, add a zero: 70.
Email me a free trick every week
One short, printable maths trick for grown-ups to try with their child. Free. Unsubscribe any time.