Quantitative Methods - Unit 1 > Decimals
 
 

Adding and Subtracting Decimal Numbers

This is very similar to adding and subtracting whole numbers.

It is important to keep the decimal points underneath each other.

Worked examples

  1. Calculate 45.57 + 326.3

    4

    5

    .

    5

    7

    +

    3

    2

    6

    .

    3

      

    3

    7

    1

    .

    8

    7


  2. Subtract 14.9 from 206.2

    2

    0

    6

    .

    2

    -

      

    1

    4

    .

    9

    1

    9

    1

    .

    3