What is 8 × 9?
8 × 9 = 72
Eight times nine is 72: 8 groups of 9, or 9 groups of 8. 72 can be swapped with 81 (9 × 9) or 63 (7 × 9), the other big nines.
A way to remember it
Ten 8s take away one 8: 80 − 8 = 72. Nines trick: 7_ and 7 + 2 = 9.
See it
8 rows of 9 dots. Count them in 9s and you reach 72.
Ways to work it out
8 groups of 9: four groups, doubled
- Double 9, then double again: 18 + 18 = 36, so 4 × 9 = 36.
- Eight groups is double that: 36 + 36 = 72.
The two colors show how the groups are split up.
9 groups of 8: ten groups, take one away
- 10 × 8 = 80.
- Take away one 8: 80 − 8 = 72.
The fact family
Know one and you know all four. Division undoes multiplication.
- 8 × 9 = 72
- 9 × 8 = 72
- 72 ÷ 8 = 9
- 72 ÷ 9 = 8
Don't mix it up with
- 9 × 9 = 819 × 9 is one more group of 9: 72 + 9 = 81.
- 8 × 8 = 648 × 8 is one group of 8 fewer: 72 − 8 = 64.
Quick check
4 questions: 8 × 9, the facts it gets mixed up with, and a division fact from its family. A tricky one comes back until you've got it.
Frequently asked questions
What is 8 times 9?
8 × 9 = 72. It is the same as 9 × 8.
What is 72 divided by 8?
72 ÷ 8 = 9, because 8 × 9 = 72.
More tricky facts
See every fact on the multiplication chart, or learn the strategies that work for any fact.