Scientific Understanding

**How do we treat ZEROs between NON-ZERO numbers in significant figures?**

Another easy set of ZEROs we have to deal with are ZEROs BETWEEN NON-ZERO numbers. ZEROs BETWEEN NON-ZERO numbers are ALWAYS significant. So when we go to count significant figures we definitely do count ZEROs between NON-ZERO numbers. These are all the numbers you are already used to counting. So they will be no different from when you are counting number places without using significant figures.

**Examples**: Determine the number of significant figures. **VIDEO demonstration of the significant figures part 2 **from the examples below.

Measured Number | Number of Significant Figures |

207 | 3 |

1409 | 4 |

84005 | 5 |

.6009 | 4 |

**PRACTICE PROBLEMS**: Determine the number of significant figures.

Measured Number | Number of Significant Figures |

303 | 3 |

90061 | 5 |

5407 | 4 |

.8026 | 4 |

4070903 | 7 |