Mathematics - Class ...
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Math - Class 4 - Addition and Subtraction of Decimals- Key Points/Notes/Worksheets/Explanation/Lesson/Practice Questions Tags: How to add and subtract decimal numbers, Steps to add and subtract decimal fraction, Addition and subtraction of decimals Worksheet PDF, Example of addition and subtraction of decimal numbers.
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Addition and Subtraction of Decimals
Steps to Add Decimals
Step1. Change all decimal fractions/decimal numbers into like decimal fractions.
Step2: Arrange all the decimal fractions in columns according to their place values in such a way that decimal points come in line.
Step3: Now add.
Example: Add 3.1 and 0.48
Step1: Change into like decimal fractions.
Here, the greatest number of decimal places is two.
3.1 has 1 decimal place, we will add one 0 after 1 and so, 3.1 is written as 3.10
0.48 already has two decimal places.
Step2: Arrange all the decimal fractions in columns according to their place values in such a way that decimal points come in line.
Steps to Subtract Decimals
Follow same steps as in addition
Example: Solve 8 – 2.34
Step1: Change into like decimal fractions.
Here, the greatest number of decimal places is two.
8 has no decimal place, we will add two zero after putting decimal point so, 8 is written as 8.0
2.34 already has two decimal places.
Step2: Arrange all the decimal fractions in columns according to their place values in such a way that decimal points come in line.(write greater decimal fraction on the top)
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