FAQs on Overview of Decimals

Question 1

1. What are decimals and how are they different from whole numbers?

Accepted Answer

Decimals are a way of representing numbers that are not whole or exact. They include a decimal point followed by one or more digits after it. Whole numbers, on the other hand, do not have any decimal places and represent complete or exact quantities.

Question 2

2. How do you read and pronounce decimals?

Accepted Answer

To read and pronounce decimals, we usually say the whole number part first, followed by the word 'and,' and then pronounce the decimal part as individual digits. For example, the decimal 3.25 is read as 'three and twenty-five hundredths.'

Question 3

3. How do you compare decimals?

Accepted Answer

To compare decimals, start by comparing the whole number parts. If they are equal, compare the tenths place, then the hundredths place, and so on. If the digits in the corresponding places are the same, move to the next place value until a difference is found. The decimal with the larger digit in the first different place value is greater.

Question 4

4. How do you add and subtract decimals?

Accepted Answer

To add or subtract decimals, align the decimal points of the numbers being added or subtracted. Then, add or subtract the digits in each place value column starting from the rightmost column (ones place). Carry over any excess digits to the left if needed.

Question 5

5. Can you convert a decimal into a fraction?

Accepted Answer

Yes, a decimal can be converted into a fraction. To convert a decimal to a fraction, write the digits after the decimal point as the numerator and a power of 10 as the denominator. Simplify the fraction if possible. For example, the decimal 0.75 can be written as the fraction 75/100, which simplifies to 3/4.

Overview of Decimals Video Lecture - Maths Olympiad Class 6

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