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FAQs on Poster: Decimals - Mathematics for Class 4

1. What are decimals and how are they used in everyday life?
Ans.Decimals are a way to represent fractions in a base-ten system, using a decimal point to separate whole numbers from fractional parts. In everyday life, decimals are used in various situations such as measuring lengths, weighing items, calculating prices, and in financial transactions where precise values are important.
2. How do you convert a fraction to a decimal?
Ans.To convert a fraction to a decimal, you divide the numerator (the top number) by the denominator (the bottom number). For example, to convert the fraction 1/4 to a decimal, you would calculate 1 ÷ 4, which equals 0.25.
3. What is the difference between terminating and repeating decimals?
Ans.Terminating decimals are decimals that come to an end, such as 0.75 or 2.5. Repeating decimals, on the other hand, have one or more digits that repeat indefinitely, such as 1/3, which is 0.333... or 0.666.... The key difference is that terminating decimals have a finite number of digits after the decimal point, while repeating decimals do not.
4. How do you add and subtract decimals?
Ans.To add or subtract decimals, you should align the numbers by the decimal point. Then, perform the addition or subtraction as you would with whole numbers. For example, to add 2.5 and 3.75, you align them like this: 2.50 + 3.75 ------ 6.25
5. Why is it important to understand decimals in mathematics?
Ans.Understanding decimals is crucial in mathematics because they are widely used in calculations involving money, measurements, and statistics. Mastery of decimals helps in performing operations accurately, interpreting data, and making informed decisions based on numerical information.
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