Addition of decimal numbers Quiz for students

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Decimals are the special kind of numbers where there is a period (.) present in them. Literally, every number qualifies to be decimal. Here this quiz contains questions that prompt the child to add decimal numbers. Though it is tricky to identify which number is having 2 decimals or which number is having 3 decimals once they are grouped properly it is no more tough job for the kids to solve the quiz because it is just adding that involves regrouping and making use of carry forward techniques. The kid will be getting a good grip on addition of decimals as he or she continues to solve the questions in this quiz.

Adding decimal numbers

Addition of decimal numbers is very similar to adding whole numbers, but there is an extra step you need to take to line up the decimal point. The decimal point is the dot that separates the whole number part of a decimal number from the decimal part.

Here is an example of how to add two decimal numbers:

Example: 5.2 + 3.1

  1. Write down the problem.

5.2 +3.1

  1. Make sure the decimal points are lined up, by putting them in the same spot as the problem above.
  2. Now you can add the numbers as if they were whole numbers, but remember to keep the decimal point in the same spot as you start adding.

5 2 +3 1

8 3

  1. The sum of 5.2 and 3.1 is 8.3

It’s important to remember that when adding decimal numbers, the decimal point should be lined up for each number, then add the numbers normally like in whole number addition. The decimal point should be in the same place in the answer as it was in the problem.

When you are adding decimal numbers, you might encounter a situation where the sum of two digits after the decimal point is 10 or more. In this case, you will have to carry over to the next digit just like when adding whole numbers.

For example: 0.7 + 0.9 = 1.6

In this case, the sum of 0.7 + 0.9 is 1.6.

The decimal point is always in the same place as it was in the problem and the result is the sum of the decimal numbers.

It’s also important to remember that the position of the decimal point indicates the magnitude of the number. For example, 0.1 is smaller than 1.0. Also, when the decimal point is shifted to the left, the value of the number is smaller and when the decimal point is shifted to the right, the value of the number is bigger.

Another example, if we want to add 0.25 and 0.12, we can see the decimal point is in the hundredth place in both numbers. So, we can line up the decimal point and add the numbers just like whole numbers.

0.25 + 0.12 = 0.37

Now that you know how to add decimal numbers, you can use this skill in many different situations, such as calculating prices in a store, measuring distances, or even in scientific calculations.

In summary, when adding decimal numbers, it is essential to line up the decimal points and add the numbers as you would with whole numbers, carrying over when necessary. By following these steps, you can easily find the sum of decimal numbers and apply this skill in various everyday and scientific situations. As you practice and become more confident with decimals, you will find that adding decimals is not so different from adding whole numbers.