How to calculate 21 multiplied by 8 using long multiplication

How to calculate 21 multiplied by 8

How to calculate 21 multiplied by 8 using long multiplication. Here is step-by-step how to calculate 21 times 8 using long multiplication:

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

	2	1
x		8

Step 2: Multiply
8 x 1 = 8. Put 8 below the line and 0 as a reminder on top:

	0
	2	1
x		8
		8

Step 3: Multiply
8 x 2 = 16. Take 16 and add 0 from the previous step to get 16. Enter 16 at the bottom:

		2	1
x			8
	1	6	8

The bottom line is the answer. Therefore, 21 times 8 equals:

168

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

How to calculate 22 multiplied by 8
Here is the next multiplication problem in our math book that we solved with long multiplication.