Search results
Significant figures (or significant digits) are the number of digits important to determine the accuracy and precision of measurement, such as length, mass, or volume. Significant digits in math convey the value of a number with accuracy.
The significant figures of a given number are those significant or important digits, which convey the meaning according to its accuracy. For example, 6.658 has four significant digits. These substantial figures provide precision to the numbers.
These four basic rules will help determine the number of significant figures in any number. However if you wish to do mathematical calculations and still work out the number of significant figures then a new set of rules comes into play!
In the BBC Bitesize KS23 maths guide, you can learn how to round numbers to three significant figures. You'll also learn what a significant number is!
Significant figures are the digits used for the meaningful representation of a given number. Learn its meaning, rules, and rounding off significant digits with solved examples.
Specifically, the rules for identifying significant figures when writing or interpreting numbers are as follows: All non-zero digits are considered significant. 91 has two significant figures (9 and 1), while 123.45 has five significant figures (1, 2, 3, 4 and 5).
1 lip 2020 · The number of significant figures is determined by starting with the leftmost non-zero digit. The leftmost non-zero digit is sometimes called the most significant digit or the most significant figure. For example, in the number 0.004205, the '4' is the most significant figure. The left-hand '0's are not significant.
