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Age 7 to 11
Challenge Level
The numbers in the five times table are:
5, 10, 15, 20, 25 ...
I could shift these numbers up by 3 and they would become:
8, 13, 18, 23, 28 ...
In this activity, the computer chooses a times table and shifts it.
Can you work out the table and the shift each time?
Can you explain how you worked out the table and shift each time, and why your method will always work?
Levels 1 and 3 include tables up to 10.
Levels 2 and 4 include tables up to 20.
On levels 1 and 2, the numbers will always be the first five numbers in the times table.
On level 3, the numbers could be any five numbers from the shifted times table.
Times Tables Shifts
| ? | ? | ? | ? | ? |
Always enter the biggest times table it could be.
The shift is always less than the times table.
The shift is always less than the times table.
Table Shifted by
You may be interested in the other problems in our Number Patterns Feature.
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NRICH is part of the family of activities in the Millennium Mathematics Project.
NRICH is part of the family of activities in the Millennium Mathematics Project.