Stage 3 · Times tables
×2, ×5, ×10
×5 is half of ×10.
How to do it
Method
×5 is half of ×10
6 × 5 = 60 ÷ 2 = 30
Another way
Count in 5s
6 × 5: 5, 10, 15, 20, 25, 30
In full
A whole number ×10 gets a zero on the end. ×5 is half of ×10: 6×5 → 60 halved = 30. ×2 is just doubling. These three are the easy ones — make them thought-free. You can also count in 2s, 5s and 10s, or learn the tables by heart; the answers are the same.
Worked examples
Have a go first, then open each one for the answer and the working.
Example 1
2 × 2
Show the answer and working
Answer: 2 × 2 = 4
2 × 2: ×2 is a double, 2 + 2 = 4
Example 2
2 × 9
Show the answer and working
Answer: 2 × 9 = 18
2 × 9: ×2 is a double, 9 + 9 = 18
Example 3
7 × 2
Show the answer and working
Answer: 7 × 2 = 14
7 × 2: ×2 is a double, 7 + 7 = 14
Example 4
10 × 10
Show the answer and working
Answer: 10 × 10 = 100
10 × 10: a whole number ×10 gets a zero on the end, 10 × 10 = 100
Practise ×2, ×5, ×10 in the game →Stage 3 · Times tables · Free to start, unlimited questions, no download