# Decimal to Percent. Percent to Decimal

- To convert a decimal to a percentage, it must be multiplied by 100.
- To convert a percentage to a decimal, it must be divided by 100.

## Examples of convert decimal to percent

Example 1.

Convert decimal to percent a) 4; b) 1; c) 0.4; d) 0.04; e) 0.004.**Solution:**

a) 4 = 4 · 100% = 400%;

b) 1 = 1 · 100% = 100%;

c) 0.4 = 0.4 · 100% = 40%;

d) 0.04 = 0.04 · 100% = 4%;

e) 0.004 = 0.004 · 100% = 0.4%.

## Examples of convert percent to decimal

Example 2.

Convert percent to decimal a) 500%; b) 100%; c) 50%; d) 5%; e) 0.5%.**Solution:**

a) 500% = | 500 | = 5; |

100 |

b) 100% = | 100 | = 1; |

100 |

c) 50% = | 50 | = 0.5; |

100 |

d) 5% = | 5 | = 0.05; |

100 |

e) 0.5% = | 0.5 | = 0.005. |

100 |

Percent
Percent Definition. Main information
Decimal to Percent. Percent to Decimal
The method of solving problems with percentage

The most common types of problems with percent:
Find P percent of A
B is P percent of what?
B is what percent of A?
Find the number which is greater (less) than a given number by P percent
Find the number A if known number B which greater (less) than A by P percent

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