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Question
Complete the following sequence.
| A100 | C300 | E500 |
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Solution
| A100 | C300 | E500 | G700 | I900 | K1100 |
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Circle the correct subtraction fact (by using casting out nine).
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6732 – 4361 = 2371
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2436 + 5315 = 7701
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723 × 24 = 17508
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Complete the following sequence.
| 200 | 400 | 600 |
The school bell rings once in an hour, to indicate that the session ends/next session begins. And for break, it will be 20 minutes. Shall we try to fill this up?
Here is the time table.
| Period 1 | Period 2 | Break | Period 3 | Period 4 | Break | Period 5 | Period 6 |
| 9:00 | 10:00 | 11:00 | 2:40 |
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.
Number Surprises
Now make your own number surprises.
