How to calculate 78 multiplied by 77 using long multiplication

How to calculate 78 multiplied by 77

How to calculate 78 multiplied by 77 using long multiplication. Here is step-by-step how to calculate 78 times 77 using long multiplication:

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

	7	8
x	7	7

Step 2: Multiply
8 x 7 = 56. Put 6 below the line and 5 as a reminder on top:

	5
	7	8
x	7	7
		6

Step 3: Multiply
7 x 7 = 49. Take 49 and add 5 from the previous step to get 54. Enter 54 at the bottom:

		7	8
x		7	7
	5	4	6

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

		7	8
x		7	7
	5	4	6
+			0

Step 5: Multiply
7 x 8 = 56. Put 6 below the line and 5 as a reminder on top:

		5
		7	8
x		7	7
	5	4	6
+		6	0

Step 6: Multiply
7 x 7 = 49. Take 49 and add 5 from the previous step to get 54. Enter 54 at the bottom:

			7	8
x			7	7
		5	4	6
+	5	4	6	0

Step 7: Add to get answer
Add up the bottom two numbers (546 + 5460 = 6006) to get the answer:

			7	8
x			7	7
		5	4	6
+	5	4	6	0
=	6	0	0	6

The bottom line is the answer. Therefore, 78 times 77 equals:

6006

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How to calculate 79 multiplied by 77
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