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378 LearnersLast updated on August 5, 2025


21/10 in decimals can be written as 2.1. It is a terminating decimal, showing that it ends without repeating.
To get 21/10 in decimal, we will use the division method. Here as 21 is larger than 10, we will perform simple division. 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 (10) will be taken as the divisor.
Step 2: Divide 21 by 10. Since 21 is greater than 10, it can be divided directly.
Step 3: 10 goes into 21 two times (2 × 10 = 20), leaving a remainder of 1.
Step 4: Add a decimal point to the quotient and bring down a 0 to the remainder, making it 10.
Step 5: 10 goes into 10 exactly once, with no remainder. This process gives us the decimal 2.1, which is a terminating decimal.
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