How to calculate 81 multiplied by 39 using long multiplication. Here is step-by-step how to calculate 81 times 39 using long multiplication:
Step 1: Setup
Set up your multiplication problem like this:
| 8 | 1 | |||||||
| x | 3 | 9 | ||||||
Step 2: Multiply
1 x 9 = 9. Put 9 below the line and 0 as a reminder on top:
| 0 | ||||||||
| 8 | 1 | |||||||
| x | 3 | 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 | 3 | 9 | ||||||
| 7 | 2 | 9 |
Step 4: Add 0
Enter a 0 at the bottom right as a place holder, because you now move over one digit:
| 8 | 1 | |||||||
| x | 3 | 9 | ||||||
| 7 | 2 | 9 | ||||||
| + | 0 |
Step 5: Multiply
3 x 1 = 3. Put 3 below the line and 0 as a reminder on top:
| 0 | ||||||||
| 8 | 1 | |||||||
| x | 3 | 9 | ||||||
| 7 | 2 | 9 | ||||||
| + | 3 | 0 |
Step 6: Multiply
3 x 8 = 24. Take 24 and add 0 from the previous step to get 24. Enter 24 at the bottom:
| 8 | 1 | |||||||
| x | 3 | 9 | ||||||
| 7 | 2 | 9 | ||||||
| + | 2 | 4 | 3 | 0 |
Step 7: Add to get answer
Add up the bottom two numbers (729 + 2430 = 3159) to get the answer:
| 8 | 1 | |||||||
| x | 3 | 9 | ||||||
| 7 | 2 | 9 | ||||||
| + | 2 | 4 | 3 | 0 | ||||
| = | 3 | 1 | 5 | 9 |
The bottom line is the answer. Therefore, 81 times 39 equals:
3159
Long Multiplication Calculator
Please enter another multiplication problem for us to explain and solve:
How to calculate 82 multiplied by 39
Here is the next multiplication problem in our math book that we solved with long multiplication.
Copyright | Privacy Policy | Disclaimer | Contact