## Addition and Subtraction

## Addition

Consider the following addition:

1,28 + 2,6 + 0,038

Transforming into decimal fractions we have:

**Practical method**:

1º) We equate the number of decimal places, with the addition of zeros; 2º) We put comma under comma; 3º) We made the addition, placing the comma in the sum aligned with the others. |

Examples:

1,28 + 2,6 + 0,038 | 35,4 + 0,75 + 47 | 6,14 + 1,8 + 0,007 |

## Subtraction

Consider the following subtraction:

3,97 - 2,013

Transforming into decimal fractions we have:

**Practical method**:

1º) We equate the number of decimal places, with the addition of zeros; 2º) We put comma under comma; 3º) We performed the subtraction, placing the comma in the difference, aligned with the others. |

Examples:

3,97 - 2,013 | 17,2 - 5,146 | 9 - 0,987 |