Subtracting Decimals

Subtracting decimals is easy if you keep your work neat

To subtract decimals, follow these steps:

  • Write down the two numbers, one under the other, with the decimal points lined up.
  • Add zeros so the numbers have the same length
  • Then subtract normally, remembering to put the decimal point in the answer

Example: Subtract 0.03 from 1.1

Line the decimals up:     1.1
    - 0.03 
       
"Pad" with zeros:     1.10
    - 0.03
       
Subtract:     1.10
    - 0.03
      1.07

Answer: 1.07

So, that was just like 110 - 3 = 107, but with the decimal point in a different position

 

Example: Calculate 7.005-0.55

Line the decimals up:     7.005
    - 0.55
       
"Pad" with zeros:     7.005
    - 0.550
       
Subtract:     7.005
    - 0.550
      6.455

Answer: 6.455

And that was just like 7,005 - 550 = 6,455

 

 
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