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| 90 × 1 = 90 | 90 × 6 = 540 |
| 90 × 2 = 180 | 90 × 7 = 630 |
| 90 × 3 = 270 | 90 × 8 = 720 |
| 90 × 4 = 360 | 90 × 9 = 810 |
| 90 × 5 = 450 | 90 × 10 = 900 |
Tips to memorise Table of 90
The method listed should be used to learn tables easily.:
- The following table illustrates how to repeatedly add 90 to get the required multiple.
| 90×1 = 90 | 90 |
| 90×2 = 180 | 90 + 90 = 180 |
| 90×3 = 270 | 90 + 90 + 90 = 270 |
| 90×4 = 360 | 90 + 90 + 90 + 90 = 360 |
| 90×5 = 450 | 90 + 90 + 90 + 90 + 90 = 450 |
| 90×6 = 540 | 90 + 90 + 90 + 90 + 90 + 90 = 540 |
| 90×7 = 630 | 90 + 90 + 90 + 90 + 90 + 90 + 90 = 630 |
| 90×8 = 720 | 90 + 90 + 90 + 90 + 90 + 90 + 90 + 90 = 720 |
| 90×9 = 810 | 90 + 90 + 90 + 90 + 90 + 90 + 90 + 90 + 90 = 810 |
| 90×10 = 900 | 90 + 90 + 90 + 90 + 90 + 90 + 90 + 90 + 90 + 90 = 900 |
In order to achieve the desired result with this strategy, you must add 90 to each subsequent step.
By initially adding 90 once, the first result can be obtained. The next step is to multiply 90 by itself twice to get the second result, and so on for all subsequent results.
Up till, you have learned the multiplication tables, try to memorise them by practising them in writing.
We remember information and don’t quickly forget it after writing it down for a while.
If you display a chart with the multiplication tables somewhere you usually sit, you can rapidly recall them. Our thoughts are affected by things we are exposed to repeatedly.
Solved Examples:
1. Describe the calculation to complete 90 times 10 minus 20.
Solution: 90 times 10 minus 20
Using the arithmetic operation table of 90, 90 × 10 = 900.
90 times 10 minus 20 = 90 × 10– 20
= 900– 20
= 880
2. Calculate: 2000– 90 x 5.
Solution: 2000– 90 x 5
= 2000 – 450
= 1550
3.What will 90 multiplied by 7.
Solution: From the above table, when we multiply 90 by 7, we get
90 × 7 = 630.
