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:
Terry spent on Monday = $43 and 65 cents = $33.65Therefore, 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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