How to calculate 81 multiplied by 9 using long multiplication. Here is step-by-step how to calculate 81 times 9 using long multiplication:
Step 1: Setup
Set up your multiplication problem like this:
| 8 | 1 | |||||||
| x | 9 | |||||||
Step 2: Multiply
9 x 1 = 9. Put 9 below the line and 0 as a reminder on top:
| 0 | ||||||||
| 8 | 1 | |||||||
| x | 9 | |||||||
| 9 |
Step 3: Multiply
9 x 8 = 72. Take 72 and add 0 from the previous step to get 72. Enter 72 at the bottom:
| 8 | 1 | |||||||
| x | 9 | |||||||
| 7 | 2 | 9 |
The bottom line is the answer. Therefore, 81 times 9 equals:
729
Long Multiplication Calculator
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How to calculate 82 multiplied by 9
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