# What is 1009 rounded to 3 sig figs?

## What is 1009 rounded to 3 sig figs?

Rules for significant figures: Zeros between non zero digits are significant. E.g. 1009 has 4 significant figures, 3.02 has 3 significant figures.

## How many significant figures are there in 3?

0.00030, 123, 0.4005, 2.04, 2.004, 123 and 2.04 each has 3 significant figures but 0.00030 is the same as 3.0 x 10-4, so it has only 2 significant figures. 3. How many significant figures are in the number 20.010? Once again, four digits are known with certainty and there are five significant figures.

How can 100 have 3 significant figures?

For example, 100 (assume 3 significant figures) + 23.643 (5 significant figures) = 123.643, which should be rounded to 124 (3 significant figures).

### How do you round to 2 significant figures?

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. if it’s 5 or more, increase the previous digit by one. if it’s 4 or less, keep the previous digit the same.

### How many significant digits does 1000 have?

one significant figure
so 1000. is our four-significant-figure answer. (from rules 5 and 6, we see that in order for the trailing zeros to “count” as significant, they must be followed by a decimal. Writing just “1000” would give us only one significant figure.)

How are significant figures rounded in a calculator?

Calculator Use. Round a number to a quantity of significant figures that you provide. In rounding significant figures, when an integer contains more digits than are significant, the last significant digit has an overline to indicate that it is the last significant digit. Enter whole numbers, real numbers, scientific notation or e notation.

#### What are the rules for rounding significant numbers?

Rounding Rules. When rounding significant figures the standard rules of rounding numbers apply, except that non-significant digits to the left of the decimal are replaced with zeros. This calculator rounds down if the next digit is less than 5 and rounds up when the next digit is greater than or equal to 5.

#### What are the rules for the significant figures?

In Mathematics, the significant figures define the number of important single digits that contribute to the degree of accuracy of the given number. The five important rules for the significant figures are as follows:

How many significant digits are in 0.000375?

The original number has 5 signifiant digits. Rounding it to 4 significant digits makes it 15880. What is 0.000375 rounded to 2 significant digts? The original number has 3 significant digits. Rounding it to 2 significant digits m akes it 0.00038.