Real-life hook
A tricycle has 3 wheels. How many wheels on 6 tricycles? Count in threes: 3, 6, 9, 12, 15, 18 — so 3 × 6 = 18.
See it
The idea
Count up in threes. It also helps to know that 3 × a number is double the number plus one more group: 3 × 6 = (2 × 6) + 6 = 12 + 6 = 18.
Worked examples
3 × 6 = 18
- Double 6 is 12.
- Add one more 6: 18.
3 × 4 = 12
- Count 3, 6, 9, 12.
- That's four threes: 12.
Common mistake
Watch out: Losing your place when skip counting, e.g. 3, 6, 8.
Better: Add exactly 3 each time: 3, 6, 9, 12. Doubling then adding one group avoids slips.
Use it in real life
Three-scoop cones for 5 friends: 3 × 5 = 15 scoops.