How to calculate 89 multiplied by 89 using long multiplication

How to calculate 89 multiplied by 89

How to calculate 89 multiplied by 89 using long multiplication. Here is step-by-step how to calculate 89 times 89 using long multiplication:

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

	8	9
x	8	9

Step 2: Multiply
9 x 9 = 81. Put 1 below the line and 8 as a reminder on top:

	8
	8	9
x	8	9
		1

Step 3: Multiply
9 x 8 = 72. Take 72 and add 8 from the previous step to get 80. Enter 80 at the bottom:

		8	9
x		8	9
	8	0	1

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

		8	9
x		8	9
	8	0	1
+			0

Step 5: Multiply
8 x 9 = 72. Put 2 below the line and 7 as a reminder on top:

		7
		8	9
x		8	9
	8	0	1
+		2	0

Step 6: Multiply
8 x 8 = 64. Take 64 and add 7 from the previous step to get 71. Enter 71 at the bottom:

			8	9
x			8	9
		8	0	1
+	7	1	2	0

Step 7: Add to get answer
Add up the bottom two numbers (801 + 7120 = 7921) to get the answer:

			8	9
x			8	9
		8	0	1
+	7	1	2	0
=	7	9	2	1

The bottom line is the answer. Therefore, 89 times 89 equals:

7921

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How to calculate 90 multiplied by 89
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