answersLogoWhite

0


Best Answer

Generally speaking, one can't have more significant figures in the answer to a mathematical equation than the least number of significant figures of all the values used to generate that equation.

6*6=40

6.0*6.0=36

For example: 1.1/2.3=0.478260869... But it doesn't make sense for the answer to have more significant figures than 2: 0.48. The point of significant figures is that the precision of the answer should reflect the precision of the factors that led to the answer.

For example, suppose you were trying to measure the length of two pieces of string, with a ruler graduated down to millimeters. Lets say you wanted the sum of the length of the two strings. It would not make sense to express the sum in nanometers, because the precision of the measurements was in millimeter level. It would also be incorrect to express the sum in centimeters even if the result was a number with one or more trailing zeros, the measurements were accurate to 1 millimeter.

374mm + 626mm = 1000mm

NOT 1 meter nor 100cm (but 1.000 meter, or 100.0cm)

User Avatar

Wiki User

13y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: How do you figure how many significant figures a number has?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

How many significant figures does this number have .00000004?

The number of significant figures is one.


How many significant figure are in the 102?

There are three significant figures in the number 102.


How many significant figures are in 007?

There is only one significant figure which is the 7. When zeros are placed before a number, they are not considered significant figures.


How many significant figures are in the number 02?

The number 02 has one significant figure because a leading zero is not significant. So the significant figure is the digit 2.


How many significant figures are there in 625000?

There are four significant figures in 625,000. The zeros in the middle of the number are considered significant because they help pinpoint the magnitude of the number.


How many significant figures are needed when multiplying two numbers?

It depends on the number of significant figures from two numbers you are multiplying. But when multiplying you use the same number of significant figures from the numbers you are multiplying with the LEAST number of significant figures. Example: 92,873.239 * 2 = 200,000 (because the number 2 has only 1 significant figure even tho 92,873.239 has 8 significant figures your answer still only has 1 significant figure)


How many significant figures are in 20000?

There are only one significant figure in the number 20000. Significant figures are the digits in a number that carry meaning contributing to its precision. In this case, the zeros in 20000 are not considered significant because they are serving as placeholders to indicate the magnitude of the number rather than its precision.


How many significant figures are in 2000?

4 significant figures.


How many significant figures does this number contain .007?

One and it is 7


How many significant figures 0.03?

There are 4 significant figures in 0.0032. Seems to be only 2 significant figures in this number.


How many significant figures in 400000000?

It has 1 significant figure.


How many significant figures are there in the number 13.2?

The number 13.2 have 3 signification figures and a least significant decimal of-1. The new formation should look like (13.20) and have 4 significant figures and a least significant figure of decimal -2.