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## How do sig figs work when multiplying?

When multiplying or dividing two or more numbers, count the significant figures in each of the original numbers. Take the smallest of the numbers of significant figures. The product or quotient will have that minimum number of significant figures.

**How many sig figs if you add and multiply?**

When performing mathematical operations, there are two rules for limiting the number of significant figures in an answerâ€”one rule is for addition and subtraction, and one rule is for multiplication and division.

### Why is knowing multiplication important?

The ability to fully understand multiplication and have fluency and instant recall will boost your child’s confidence in the subject. Many of the tasks they are required to do both at school, and in the home requires this basic skill.

**When multiplying sig figs do you round?**

(2) In multiplication and division, the result should be rounded off so as to have the same number of significant figures as in the component with the least number of significant figures.

#### Do you round up when multiplying sig figs?

**How do you round to the correct number of significant figures?**

To round to a significant figure:

- look at the first non-zero digit if rounding to one significant figure.
- look at the digit after the first non-zero digit if rounding to two significant figures.
- draw a vertical line after the place value digit that is required.
- look at the next digit.

## How many significant figures does 250.0 have?

4 significant figures

250.0 has 4 significant figures. 4. If there is not a decimal point zeroes following the last non-zero number are not significant. 2500 has 2 significant figures.

**How many significant figures does 0.200 have?**

3 significant figures

(4) Zeroes to the right of a decimal point in a number are significant: 0.023 mL has 2 significant figures, 0.200 g has 3 significant figures.

### How many significant figures does the number 0.03 have?

1 sig

All zeros at the left of the number are NOT significant. Example: 0.00032 has 2 sig. figs, 0.03 has 1 sig.