**3/10 as a percentage.** |
**Reason:** |

3/10 x 100/1 |
To change a fraction to a percentage multiply by 100/1. Multiply 3/10 by 100/1. |

= 3/1 x 10/1 |
10 and 100 have greatest common factor 10. Divide 10 by 10. Divide 100 by 10. |

= 30/1 |
Multiply 3 by 10. Multiply 1 by 1. |

= 30 % |
Divide 30 by 1. |