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538 LearnersLast updated on August 5, 2025


21/5 in decimals can be written as 4.2. It is a terminating decimal, showing it will not repeat infinitely.
To get 21/5 in decimal, we will use the division method. Here, 21 is larger than 5, so we can divide directly. Let's see the step-by-step breakdown of the process:
Step 1: Identify the numerator and denominator because the numerator (21) will be taken as the dividend and the denominator (5) will be taken as the divisor.
Step 2: Divide 21 by 5. 5 goes into 21 four times, which gives us 20.
Step 3: Subtract 20 from 21, which leaves a remainder of 1.
Step 4: Bring down a 0 to make it 10 and add a decimal point in the quotient place.
Step 5: 5 goes into 10 two times, which gives us 10. Subtract 10 from 10, and the remainder is 0. This process shows that the division ends with no remainder, making it a terminating decimal.
The answer for 21/5 as a decimal will be 4.2.
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