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Home >> Decimal >> Unlike Decimals >> Addition of Unlike Decimals >>

Addition of Unlike Decimals

Convert Unlike Decimals to Like Decimals Addition of Unlike Decimals Subtraction of Unlike Decimals



Before you learn How to Add Un-like Decimals, You must know:

What are Unlike Decimals ?
What is a Decimal Point ?
How to Find Place Values of Digits in Decimal ?
How to Convert Unlike Decimals to Like Decimals ?

Learn addition of unlike decimals in the following steps:

  • Step 1: Convert unlike decimals to like decimals.
  • Step 2: Write addends one below the other in such a way that decimal point and digit of same place values should be at same vertical order or same place value
  • Step 3: Add the digits as we add digit in case of whole numbers
  • Step 4: Decimal Point of addends and Sum should be at same vertical order or same place.

    Example - Let's try to understand the following example by adding 1.1 and 6.66

    Solution: Steps for addition are as follows:

    Step 1: Convert unlike decimals to like decimals
    Decimal 1.1 and 6.66 are Unlike Decimals, because:
    1.1 have only one decimal place i.e. digit 1
    6.66 have two decimal places i.e. digit 6 and 6

    Now, 1.1 can be converted into a decimal having two decimal places i.e. by adding 0(Zero) at its hundredths place.

    And after conversion we get;
    1.10 having two decimal places i.e. digit 1 and 0

    Now, 1.10 and 6.66 are Like Decimals because both have similar decimal places.

    Step 2: Write addends one below the other in such a way that decimal point and digit of same place values should be at same vertical order or at same place value and we get:

    1.10
    6.66

    Step 3: Add the digits as we add digit in case of whole numbers and we get:

    1.10
    6.66

    7 76



    Digits at hundredths place are added and we get: 0 + 6 = 6
    6 is written in the sum at same place value.

    Digits at tenths place are added and we get : 1 + 6 = 7
    7 is written in the sum at same place value.

    Digits at ones place are added and we get : 1 + 6 = 7
    7 is written in the sum at same place value.

    Step 4: Decimal Point of add ends and Sum should be at same vertical order or at same place and we get:

    1.10
    6.66

    7.76



    Hence, on adding decimals 1.1 and 6.66 we get decimal 7.67



    Study More Solved Questions / Examples

  • Add the following unlike decimals -
    A) 8.34 and 6.8
    B) 18.456 and 28.9
    C) 64.785 and 9.72
    D) 17.28, 54.9 and 0.005
    E) 52.005, 50.5 and 23.02
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