How to calculate 54 multiplied by 45 using long multiplication

How to calculate 54 multiplied by 45

How to calculate 54 multiplied by 45 using long multiplication. Here is step-by-step how to calculate 54 times 45 using long multiplication:

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

	5	4
x	4	5

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

	2
	5	4
x	4	5
		0

Step 3: Multiply
5 x 5 = 25. Take 25 and add 2 from the previous step to get 27. Enter 27 at the bottom:

		5	4
x		4	5
	2	7	0

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

		5	4
x		4	5
	2	7	0
+			0

Step 5: Multiply
4 x 4 = 16. Put 6 below the line and 1 as a reminder on top:

		1
		5	4
x		4	5
	2	7	0
+		6	0

Step 6: Multiply
4 x 5 = 20. Take 20 and add 1 from the previous step to get 21. Enter 21 at the bottom:

			5	4
x			4	5
		2	7	0
+	2	1	6	0

Step 7: Add to get answer
Add up the bottom two numbers (270 + 2160 = 2430) to get the answer:

			5	4
x			4	5
		2	7	0
+	2	1	6	0
=	2	4	3	0

The bottom line is the answer. Therefore, 54 times 45 equals:

2430

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

How to calculate 55 multiplied by 45
Here is the next multiplication problem in our math book that we solved with long multiplication.