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Created page with "==Key Stage 4== ===Meaning=== Significant Figures are the number of digits in a number that represent the precision of the number. ===About Significant Fi..."
==Key Stage 4==
===Meaning===
[[Significant Figures]] are the number of digits in a number that represent the [[precise|precision]] of the [[number]].
===About Significant Figures===
: [[Significant Figures]] begin with the digit representing the largest number.
: A number may be [[precise]] to a given number of [[Significant Figures|significant figures]].
: The number of [[Significant Figures|significant figures]] is related to how [[precise]] the [[reading]] from an [[Measuring Instrument|measuring instrument]] may be.
: When performing a [[calculation]] the answer should never be given to more [[Significant Figures|significant figures]] than the numbers used in the [[calculation]].
===Examples===
π = 3.14159265359 correct to 12 '''significant figures'''.
π = 3.142 correct to 4 '''significant figures'''.
The diameter of [[Earth]] = 12,742,000m correct to 5 '''significant figures'''.
The diameter of [[Earth]] = 12,700,000m correct to 3 '''significant figures'''.
The diameter of [[Earth]] = 10,000,000m correct to 1 '''significant figures'''.
===Meaning===
[[Significant Figures]] are the number of digits in a number that represent the [[precise|precision]] of the [[number]].
===About Significant Figures===
: [[Significant Figures]] begin with the digit representing the largest number.
: A number may be [[precise]] to a given number of [[Significant Figures|significant figures]].
: The number of [[Significant Figures|significant figures]] is related to how [[precise]] the [[reading]] from an [[Measuring Instrument|measuring instrument]] may be.
: When performing a [[calculation]] the answer should never be given to more [[Significant Figures|significant figures]] than the numbers used in the [[calculation]].
===Examples===
π = 3.14159265359 correct to 12 '''significant figures'''.
π = 3.142 correct to 4 '''significant figures'''.
The diameter of [[Earth]] = 12,742,000m correct to 5 '''significant figures'''.
The diameter of [[Earth]] = 12,700,000m correct to 3 '''significant figures'''.
The diameter of [[Earth]] = 10,000,000m correct to 1 '''significant figures'''.