Adding decimals is just same like adding as usual.

How to add decimal number?

To add decimal follow the below steps:

● Write down the decimal numbers, one number under the other number and line up the decimal points.

● Convert the given decimals to like decimals.

● Arrange the addends in such a way that the digits of the same place are in the same column.

● Add the numbers from right as we carry addition usually.

● Remember to place the decimal point down in the answer in the same place as the numbers above it.

** **

Worked-out problems to find the sum of the decimal numbers:

Read the above explanation step-by-step and try to understand the examples on addition of decimals.

**1. Add the decimals:**

**(i) **1.83, 21.105, 236.8
and 0.9

**Solution:**

We have 1.83 + 21.105 + 236.8 + 0.9

Converting all the addends to like decimals

1.830 + 21.105 + 236.800 + 0.900

Arranging the addends in columns and on adding we get

**Answer: 260.635**

** **

**(ii) **7.39, 65.007, 213.8
and 91.2

**Solution:**

We have 7.39 + 65.007 + 213.8 + 91.2

Converting all the addends to like decimals

7.390 + 65.007 + 213.800 + 91.200

Arranging the addends in columns and on adding we get

**Answer: 377.397**

** **

Word problems on adding decimals:

**2.** Terry spent $33 and 65 cents
on Monday, $21 on Tuesday and $9 and 7 cents on Wednesday. Find the total money spent by her in three
days altogether.

**Solution:**

She spent on Tuesday = $21 = $21.00

She spent on Wednesday = $9 and 5 cents

Therefore, total amount spent by Terry = $(33.65 + 21.00 + 9.07) = $63.72

** **

**3.** First number is 85.99,
second number is 107.81 and the third number is 19.207. Find the sum of the
three numbers.

**Solution:**

First number = 85.99

Second number = 107.81

Third number = 19.207

Therefore, sum of three numbers = (85.99 + 107.81 + 19.207) = 213.007

● **Related Concept **

● Decimals

● Conversion of Unlike Decimals to Like Decimals

● Decimal and Fractional Expansion

● Converting Decimals to Fractions

● Converting Fractions to Decimals

● H.C.F. and L.C.M. of Decimals

● Repeating or Recurring Decimal

● BODMAS/PEMDAS Rules - Involving Decimals

● PEMDAS Rules - Involving Integers

● PEMDAS Rules - Involving Decimals

● BODMAS Rules - Involving Integers

● Conversion of Pure Recurring Decimal into Vulgar Fraction

● Conversion of Mixed Recurring Decimals into Vulgar Fractions

● Rounding Decimals to the Nearest Whole Number

● Rounding Decimals to the Nearest Tenths

● Rounding Decimals to the Nearest Hundredths

● Simplify Decimals Involving Addition and Subtraction Decimals

● Multiplying Decimal by a Decimal Number

● Multiplying Decimal by a Whole Number

● Dividing Decimal by a Whole Number

● Dividing Decimal by a Decimal Number

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