How to calculate 89 multiplied by 45 using long multiplication

How to calculate 89 multiplied by 45

How to calculate 89 multiplied by 45 using long multiplication. Here is step-by-step how to calculate 89 times 45 using long multiplication:

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

	8	9
x	4	5

Step 2: Multiply
9 x 5 = 45. Put 5 below the line and 4 as a reminder on top:

	4
	8	9
x	4	5
		5

Step 3: Multiply
5 x 8 = 40. Take 40 and add 4 from the previous step to get 44. Enter 44 at the bottom:

		8	9
x		4	5
	4	4	5

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		4	5
	4	4	5
+			0

Step 5: Multiply
4 x 9 = 36. Put 6 below the line and 3 as a reminder on top:

		3
		8	9
x		4	5
	4	4	5
+		6	0

Step 6: Multiply
4 x 8 = 32. Take 32 and add 3 from the previous step to get 35. Enter 35 at the bottom:

			8	9
x			4	5
		4	4	5
+	3	5	6	0

Step 7: Add to get answer
Add up the bottom two numbers (445 + 3560 = 4005) to get the answer:

			8	9
x			4	5
		4	4	5
+	3	5	6	0
=	4	0	0	5

The bottom line is the answer. Therefore, 89 times 45 equals:

4005

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How to calculate 90 multiplied by 45
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