How to calculate 45 multiplied by 45 using long multiplication

How to calculate 45 multiplied by 45

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

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

	4	5
x	4	5

Step 2: Multiply
5 x 5 = 25. Put 5 below the line and 2 as a reminder on top:

	2
	4	5
x	4	5
		5

Step 3: Multiply
5 x 4 = 20. Take 20 and add 2 from the previous step to get 22. Enter 22 at the bottom:

		4	5
x		4	5
	2	2	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		4	5
	2	2	5
+			0

Step 5: Multiply
4 x 5 = 20. Put 0 below the line and 2 as a reminder on top:

		2
		4	5
x		4	5
	2	2	5
+		0	0

Step 6: Multiply
4 x 4 = 16. Take 16 and add 2 from the previous step to get 18. Enter 18 at the bottom:

			4	5
x			4	5
		2	2	5
+	1	8	0	0

Step 7: Add to get answer
Add up the bottom two numbers (225 + 1800 = 2025) to get the answer:

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

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

2025

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How to calculate 46 multiplied by 45
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