What is 21 times 10/5?

How do you multiply 21 by 10/5? Here we will show you step-by-step how to solve 21 times 10/5, which can be written as follows:

Step 1: Setup
First of all, note that 21 is the same as 21/1 since 21 divided by 1 is 21. Therefore, start by setting up the problem like this:

Step 2: Multiply
Multiply the numerators together (21 x 10 = 210) and multiply the denominators together (1 x 5 = 5) and make it into one fraction like so:

210

Step 3: Minimize
The greatest common factor of 210 and 5 is 5. Minimize the fraction by dividing the numerator and the denominator by its greatest common factor to get:

Step 4: Convert
Convert the improper fraction above to a whole number to get the answer:

That's it! Now you know how to calculate 21 times 10/5.

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