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Multiply x * . () by twelve:
12 groups of or 12 lots of
Learn your 12 times tables
Times by 10 then add 2 more
Divide ÷ / by twelve:
How many times does 12 go into
Break into 12 groups
Reverse 12x tables 3x12=36 so 36÷12=3 and 36÷3=12
Add + twelve:
Add 1 to the tens and 2 to the ones digit
Add 10 then add 2
Take - twelve:
Take 1 from the tens digit then 2 from the ones digit
Take 2 then take 10
Number in grey (left) x number in grey (top) = number in white OR number in white ÷ number in grey = other number in grey.
| x | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 11 | 0 | 11 | 22 | 33 | 44 | 55 | 66 | 77 | 88 | 99 | 110 | 121 | 132 |
Number in grey (left) + number in grey (top) = number in white OR number in white - number in grey = other number in grey.
| + | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 11 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
Understanding 11 ⇠Previous Lesson
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