# Sig Fig Calc

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Significant figures are used in math in representing scientific Data. There are certain rules which are followed for expressing the number as significant numbers. Mentioned here are some useful rules for significant numbers. All non-zero digits such as {0, 1, 2, 3, 4, 5, 6, 7, 8, 9.} are significant. A zero number which is in-between two non-zero numbers is also considered as significant. While adding and subtracting the significant numbers the answer contains as many significant numbers as the given numbers in the question. While multiplying or dividing significant numbers the answer contains the number of significant numbers as the number with the least number of significant digits in the question.

Example 1: Find the answer to 32.112345 + 2.1423 + 0.43?

Solution: Given is addition of three decimal numbers with different number of decimal spaces.

The decimal number 32.112345 has 6 decimal spaces.

The decimal number 2.1423 has 4 decimal spaces.

The decimal number 0.43 has 2 decimal spaces

The sum of the three numbers is: 32.112345 + 2.1423 + 0.43 = 34.684645

The answer is 34.69 (Rounded to 2 decimal spaces.)

Example 2: Find the answer to 55.6321 + 5.321 + 0.64?

Solution: Given is addition of three decimal numbers with different number of decimal spaces.

The decimal number 55.6321 has 4 decimal spaces.

The decimal number 5.321 has 3 decimal spaces.

The decimal number 0.43 has 2 decimal spaces

The sum of the three numbers is: 55.6321 + 5.321 + 0.64= 61.5931

The answer is 61.59 (Rounded to 2 decimal spaces.)