How to calculate 81 multiplied by 64 using long multiplication

How to calculate 81 multiplied by 64

How to calculate 81 multiplied by 64 using long multiplication. Here is step-by-step how to calculate 81 times 64 using long multiplication:

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

	8	1
x	6	4

Step 2: Multiply
1 x 4 = 4. Put 4 below the line and 0 as a reminder on top:

	0
	8	1
x	6	4
		4

Step 3: Multiply
4 x 8 = 32. Take 32 and add 0 from the previous step to get 32. Enter 32 at the bottom:

		8	1
x		6	4
	3	2	4

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		6	4
	3	2	4
+			0

Step 5: Multiply
6 x 1 = 6. Put 6 below the line and 0 as a reminder on top:

		0
		8	1
x		6	4
	3	2	4
+		6	0

Step 6: Multiply
6 x 8 = 48. Take 48 and add 0 from the previous step to get 48. Enter 48 at the bottom:

			8	1
x			6	4
		3	2	4
+	4	8	6	0

Step 7: Add to get answer
Add up the bottom two numbers (324 + 4860 = 5184) to get the answer:

			8	1
x			6	4
		3	2	4
+	4	8	6	0
=	5	1	8	4

The bottom line is the answer. Therefore, 81 times 64 equals:

5184

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How to calculate 82 multiplied by 64
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