How to calculate 45 multiplied by 31 using long multiplication

How to calculate 45 multiplied by 31

How to calculate 45 multiplied by 31 using long multiplication. Here is step-by-step how to calculate 45 times 31 using long multiplication:

Step 1: Setup
Set up your multiplication problem like this:

	4	5
x	3	1

Step 2: Multiply
5 x 1 = 5. Put 5 below the line and 0 as a reminder on top:

	0
	4	5
x	3	1
		5

Step 3: Multiply
1 x 4 = 4. Take 4 and add 0 from the previous step to get 4. Enter 4 at the bottom:

	4	5
x	3	1
	4	5

Step 4: Add 0
Enter a 0 at the bottom right as a place holder, because you now move over one digit:

	4	5
x	3	1
	4	5
+		0

Step 5: Multiply
3 x 5 = 15. Put 5 below the line and 1 as a reminder on top:

	1
	4	5
x	3	1
	4	5
+	5	0

Step 6: Multiply
3 x 4 = 12. Take 12 and add 1 from the previous step to get 13. Enter 13 at the bottom:

			4	5
x			3	1
			4	5
+	1	3	5	0

Step 7: Add to get answer
Add up the bottom two numbers (45 + 1350 = 1395) to get the answer:

			4	5
x			3	1
			4	5
+	1	3	5	0
=	1	3	9	5

The bottom line is the answer. Therefore, 45 times 31 equals:

1395

Long Multiplication Calculator
Please enter another multiplication problem for us to explain and solve:

How to calculate 46 multiplied by 31
Here is the next multiplication problem in our math book that we solved with long multiplication.