How to calculate 30 multiplied by 15 using long multiplication

How to calculate 30 multiplied by 15

How to calculate 30 multiplied by 15 using long multiplication. Here is step-by-step how to calculate 30 times 15 using long multiplication:

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

	3	0
x	1	5

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

	0
	3	0
x	1	5
		0

Step 3: Multiply
5 x 3 = 15. Take 15 and add 0 from the previous step to get 15. Enter 15 at the bottom:

		3	0
x		1	5
	1	5	0

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

		3	0
x		1	5
	1	5	0
+			0

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

		0
		3	0
x		1	5
	1	5	0
+		0	0

Step 6: Multiply
1 x 3 = 3. Take 3 and add 0 from the previous step to get 3. Enter 3 at the bottom:

		3	0
x		1	5
	1	5	0
+	3	0	0

Step 7: Add to get answer
Add up the bottom two numbers (150 + 300 = 450) to get the answer:

		3	0
x		1	5
	1	5	0
+	3	0	0
=	4	5	0

The bottom line is the answer. Therefore, 30 times 15 equals:

450

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How to calculate 31 multiplied by 15
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