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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, 15 represents how many parts out of the whole. The denominator (number below) shows how many parts make the whole, here it is 40. 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 fraction part. The numbers to the left of the decimal point represent the whole, and those to the right represent the fractional part.
15/40 in decimals can be written as 0.375. It is a terminating decimal, meaning it does not repeat infinitely.
To convert 15/40 into a decimal, we will use the division method. Here, as 15 is smaller than 40, we will take the help of the decimal method, which will give us 0.375. Let's see the step-by-step breakdown of the process:
Step 1: Identify the numerator and denominator since the numerator (15) will be taken as the dividend and the denominator (40) will be taken as the divisor.
Step 2: As 15 is smaller than 40, it can't be divided directly, so we will take the help of decimals. We will add a decimal point in the quotient and append 0 to the dividend, making 15 as 150.
Step 3: Now that it is 150, we can divide it by 40. Let's see how many times 40 fits into 150.
Step 4: 40 goes into 150 three times since 40 × 3 = 120. We will write 3 in the quotient place and subtract 120 from 150, giving us 30.
Step 5: Bring down another 0 in the dividend place, making it 300, and then repeat the division process.
Step 6: 40 goes into 300 seven times since 40 × 7 = 280. Write 7 in the quotient place and subtract 280 from 300, giving us 20.
Step 7: Bring down another 0, making it 200.
Step 8: 40 goes into 200 five times since 40 × 5 = 200. Write 5 in the quotient place, and the remainder is 0.
The answer for 15/40 as a decimal is 0.375.