How to calculate 21 multiplied by 4 using long multiplication

How to calculate 21 multiplied by 4

How to calculate 21 multiplied by 4 using long multiplication. Here is step-by-step how to calculate 21 times 4 using long multiplication:

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

	2	1
x		4

Step 2: Multiply
4 x 1 = 4. Put 4 below the line and 0 as a reminder on top:

	0
	2	1
x		4
		4

Step 3: Multiply
4 x 2 = 8. Take 8 and add 0 from the previous step to get 8. Enter 8 at the bottom:

	2	1
x		4
	8	4

The bottom line is the answer. Therefore, 21 times 4 equals:

84

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How to calculate 22 multiplied by 4
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