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प्रश्न
Circle the correct multiplication fact (by using method of casting out nine).
723 × 24 = 17508
उत्तर
723 × 24 = 17508
3 × 6 = 12
18 = 12
1 + 8 = 1 + 2
9 = 3
The multiplication is not correct.
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संबंधित प्रश्न
Circle the multiples of 9 (by using casting out nine).
13476
Circle the correct addition fact (by using casting out nine).
7632 + 2213 = 9845
Circle the correct subtraction fact (by using casting out nine).
6732 – 4361 = 2371
Circle the correct division fact (by using method of casting out nine).
728 ÷ 4 = 182
Circle the correct addition fact (by using casting out nine).
2436 + 5315 = 7701
Complete the following sequence.
9 × 111 = 999
9 × 222 = 1998
9 × 333 = 2997
9 × 444 = ________
9 × 555 = ________
9 × 666 = ________
Imagine you are a traffic inspector. You are asked to design the traffic signal timings. Can you design it?
| Red | Yellow/Orange | Green | Red | Green |
| 7:30 a.m |
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.
Take any number. Now multiply it by 2, 3, 4 ............... at every step. Also, add 3 to it at each step. Look at the difference in the answer. Is it the same at every step?
Number Surprises
