How to calculate 18 multiplied by 15 using long multiplication

How to calculate 18 multiplied by 15

How to calculate 18 multiplied by 15 using long multiplication. Here is step-by-step how to calculate 18 times 15 using long multiplication:

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

	1	8
x	1	5

Step 2: Multiply
8 x 5 = 40. Put 0 below the line and 4 as a reminder on top:

	4
	1	8
x	1	5
		0

Step 3: Multiply
5 x 1 = 5. Take 5 and add 4 from the previous step to get 9. Enter 9 at the bottom:

	1	8
x	1	5
	9	0

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

	1	8
x	1	5
	9	0
+		0

Step 5: Multiply
1 x 8 = 8. Put 8 below the line and 0 as a reminder on top:

	0
	1	8
x	1	5
	9	0
+	8	0

Step 6: Multiply
1 x 1 = 1. Take 1 and add 0 from the previous step to get 1. Enter 1 at the bottom:

		1	8
x		1	5
		9	0
+	1	8	0

Step 7: Add to get answer
Add up the bottom two numbers (90 + 180 = 270) to get the answer:

		1	8
x		1	5
		9	0
+	1	8	0
=	2	7	0

The bottom line is the answer. Therefore, 18 times 15 equals:

270

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How to calculate 19 multiplied by 15
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