## Do exponents affect sig figs?

That is, they would write “1230.” as “1.230 × 103”, and “1230” as “1.23 × 103”. In this way, all numbers written around the decimal place count as significant figures, and it is immediately obvious just by looking that “1.230 × 103” has more significant figures than does “1.23 × 103”.

**How do you know how many sig figs to use when multiplying?**

For multiplication and division use the following rule: The LEAST number of significant figures in any number of the problem determines the number of significant figures in the answer.

### How many significant figures does 6.0 have?

How Many Significant Figures?

Number | Scientific Notation | Significant Figures |
---|---|---|

6.0 | 6.0×100 | 2 |

6.2 | 6.2×100 | 2 |

6.002 | 6.002×100 | 4 |

6.02×10^23 | 6.02×1023 | 3 |

**Does concentration count for sig figs?**

A pH to one decimal place (like 5.2) corresponds to a concentration known to one significant figure. A pH to two decimal places (like 5.22) corresponds to a concentration known to two significant figures. The part of the pH to the left of the decimal point has no effect on significant figures.

#### How many significant figures does 8.0 have?

How Many Significant Figures?

Number | Scientific Notation | Significant Figures |
---|---|---|

0.008 | 8.0×10-3 | 1 |

0.01 | 1.0×10-1 | 1 |

0.105 | 1.05×10-1 | 3 |

0.0025 | 2.5×10-3 | 2 |

**What are the sig fig rules for addition and subtraction?**

When you add or subtract, you assign significant figures in the answer based on the number of decimal places in each original measurement. When you multiply or divide, you assign significant figures in the answer based on the smallest number of significant figures from your original set of measurements.

## How do you multiply and divide with sig figs?

The following rule applies for multiplication and division: The LEAST number of significant figures in any number of the problem determines the number of significant figures in the answer.

**What happens when you multiply sig figs?**

When multiplying two numbers, the important value is the number of significant figures. If the numbers being multiplied have three significant figures, then the product will have three significant figures. For example, if you wanted to find the area of a rectangular yard, you would measure the length and width.