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Question
Complete the following sequence.
100, 400, 700, ______, _______, ________.
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Solution
100, 400, 700, 1000, 1300, 1600.
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Complete the following sequence.
| A100 | C300 | E500 |
Look at the calendar below.
Let us mark 3 × 3 boxes (9 dates) on the calendar and see some magic.
| Take the smallest number | 3 |
| Add 8 to it | +8 |
| = | 11 |
| Multiply it by 9 | ×9 |
| Total | 99 |
Now you choose any 3 × 3 boxes from a calendar and find the total in the same way.
Now try doing it with some other number and also take a different number to add at each step.
What if someone gives you to add ten numbers together?
Did you notice some pattern in the answers?
Now make your own number surprises.
