| 20 | 15 | 8 | 22 |
| 34 | 5 | 5 | 14 |
| 19 | 17 | 6 | 9 |
| 7 | 18 | 21 | 23 |



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Keywords: Starter
| Arithmetic
| Mental Methods
Good, achieved the results I required
Satisfactory
Didn't really capture the interest of the students
Not for me! I wouldn't use this type of activity.
This starter has scored a mean of 4.0 out of 5 based on 6 votes.
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Here are some triplets. Did you find any more?
|
23+5+6 |
18+7+9 |
17+8+9 |
| 19+7+8 | 21+6+7 | 20+6+8 |
| 22+5+7 | 5+14+15 | |