## Addition and Subtraction of Decimals

For addition/subtraction of decimals, we have to follow these steps:

**Step 1:** Change the given decimals into like decimals.

**Step 2:** Write the numbers in columns, so that decimal points should come in one column and tenths comes under tenths, hundredths comes under hundredths, and so on.

**Step 3:** Now, add or subtract the decimals, as we add or subtract the whole numbers.

**Step 4:** Put the decimal in the sum or difference directly under the decimal points of all the decimals.

**Example 1:** Add 3.85 and 2.5.

**Solution:** Converting into like decimals

∴ 3.85 + 2.5 = 6.35

**Example 2:** Subtract 41.715 from 63.2.

**Solution:** Converting into like decimals

∴ 63.2-41.715 = 21.485

**Example 3:** Add 41.8, 39.24, 5.01, and 62.6.

**Solution:** Converting into like decimals

∴ 41.8 + 39.24 + 5.01 + 62.6 = 148.65

**Example 4:** Surajgot Rs 15.50 from his mother and Rs 30.05 from his father. How much money did he get?

**Solution:**

**Example 5:** The sum of two numbers is 100. If one of them is 78.67, find the other.

**Solution:**

**Note:**

- Fractions with denominators 10,100,1000, etc. are known as decimal fractions or decimals.
- Decimal number has whole number part and decimal part separated by a decimal point.
- Zeros to the extreme right side of the decimals does not have any value.
- Two decimals having the same number of decimal places are like decimals and decimals having different decimal places are unlike decimals.
- To add or subtract decimals, it is easier to convert them as like decimals and then add or subtract as we do for whole numbers.

**Read More About:**

- What is the meaning of Place Value and Face Value in Maths?
- What is the Place Value Chart of an Indian and International System?
- What is a Decimal Value and Place Value of Decimals?
- How do you Round to the Nearest Ten Thousand
- What is the Definition of an Equivalent Decimal
- Converting To and From Scientific Notation
- What is the Difference between Ascending and Descending Order
- How do you Multiply and Divide Decimals?
- How do you Convert Fractions into Decimals and Vice Versa
- How do you Convert Unlike Decimals into Like Decimals