Question

Number of significant figures in the sum of 13.21,8.0,2.222

Answer 1

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Answer 2

Number of significant figures in the sum of 13.21,8.0,2.222 is 5.

Step-by-step explanation:

Given : The sum of 13.21,8.0,2.222.

To find : Number of significant figures ?

Solution :

Significant Figure Rules

1) Non-zero digits are always significant.

2) All zeros between other significant digits are significant.

3) The number of significant figures is determined by starting with the leftmost non-zero digit.

4) The rightmost digit of a decimal number is the least significant digit or least significant figure.

5) If no decimal point is present, the rightmost non-zero digit is the least significant figure.

First we find the sum of numbers,

$S=13.21+8.0+2.222\\\\S=23.432$

Number of significant figures is 5.