To add decimals, follow these steps:
  • Write down the numbers, one under the other, with the decimal points lined up
  • Put in zeros so the numbers have the same length
  • Then add normally, remembering to put the decimal point in the answer

Example: Add 1.452 to 1.3


Line the decimals up:


1.452


+
1.3




"Pad" with zeros:


1.452


+
1.300




Add:


1.452


+
1.300







2.752

Example: Add 3.25, 0.075 and 5

Line the decimals up:


3.25



0.075


+
5.




"Pad" with zeros:


3.250



0.075


+
5.000




Add:


3.250



0.075


+
5.000







8.325


That's all there is to it - just remember to line up the decimals, then add normally.
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