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Multiply x * . () by three:
3 groups of or 3 lots of
Triple the number
Skip count in 3s
Add the number to itself and then again 3x6=6+6+6=18
Learn your 3 times tables
Divide ÷ / by three:
How many times does 3 go into
Break into 3 groups
One third of
Skip count in 3s and count how many 3s
Keep subtracting 3 from the number e.g. 9-3-3-3=0 so 3 goes into 9 exactly 3 times
Reverse your 3 times tables 3x2=6 so 6÷2=3 and 6÷3=2
Add + three:
Count three on from the original number
Learn addition rules e.g. 6+3=9 so 66+3=69
Take - three:
Count two back from the original number
Learn subtraction rules e.g. 7-3=4 so 67-3=64
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3 | 0 | 3 | 6 | 9 | 12 | 15 | 18 | 21 | 24 | 27 | 30 | 33 | 36 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
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