Maths trick
Times four: double double
To multiply by 4, double the number and then double again.
Ages 7–10
Worked example
Tap through the steps. Each step can be read aloud.
Step 1 of 4
4 × 7: 4 is double 2.
Quick practice
Five fresh questions, marked straight away. Use the trick!
To multiply by 4, double the number and then double again.
