90 multiplied by 21 is 1890
90 × 21 = 1890
Explanation: Multiplication is repeated addition. So, 90 × 21 means adding 90, 21 times:
90 + 90 + 90 + 90 + 90 + 90 + 90 + 90 + 90 + 90 + 90 + 90 + 90 + 90 + 90 + 90 + 90 + 90 + 90 + 90 + 90 = 1890
Word Problem Style
If you have 21 boxes and each box contains 90 apples, then the total number of apples is 1890.
Quick Facts
- 90 is called the multiplicand.
- 21 is called the multiplier.
- The result, 1890, is called the product.
Multiplication Table for 90
| 90 × N | Result |
|---|---|
| 90 × 1 | 90 |
| 90 × 2 | 180 |
| 90 × 3 | 270 |
| 90 × 4 | 360 |
| 90 × 5 | 450 |
| 90 × 6 | 540 |
| 90 × 7 | 630 |
| 90 × 8 | 720 |
| 90 × 9 | 810 |
| 90 × 10 | 900 |
| 90 × 11 | 990 |
| 90 × 12 | 1080 |