Multiplication by 12, step by step
The twelve times table is two easier tables added together, which is why it feels harder than it needs to.
The question
11 × 12
11×12
11 × 12=12 × 11
11 × 5=55
11 × 7=77
55+77=132
11×12=132
- 11 × 12 means 11 groups with 12 in each one — 11 rows of 12. The answer counts everything in all of them, not one row.
- Added up, that is 12 written 11 times — nobody wants to do that. Turn it round: 12 × 11 is the same amount, and it is only 12 lots of 11 to add instead.
- If 11 × 12 will not come, split the 12 at five: 11 × 5 = 55, and 11 × 7 = 77. Together that is 55 + 77 = 132.
- So 11 × 12 = 132.
How it works.
- 01
11 × 12 means 11 groups with 12 in each one — 11 rows of 12. The answer counts everything in all of them, not one row.
- 02
Added up, that is 12 written 11 times — nobody wants to do that. Turn it round: 12 × 11 is the same amount, and it is only 12 lots of 11 to add instead.
- 03
If 11 × 12 will not come, split the 12 at five: 11 × 5 = 55, and 11 × 7 = 77. Together that is 55 + 77 = 132.
- 04
So 11 × 12 = 132.