Table Of Contents
Last updated on March 13th, 2025
It is a simple question on decimal conversion. Firstly, we have to learn fractions and decimals. A fraction represents a part of the whole. It has two parts: numerator (number on the top) here, 21 represents how many parts out of the whole. The denominator (number below) shows how many parts make the whole, here it is 10. A decimal is a way to represent a number that is not whole, using a (.) or a decimal to separate the whole part from the fractional part. The numbers to the left of the decimal point represent the whole, and those to the right represent the fractional part.
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.