Question

plz plz plz give some examples of rounding off to three significant figures class 11th cchemistry????

Answer 1

Answer:

solve examples

1) 24.123

2) 4.604

3) 0.045

4) 433.00

5) 1.32*10⁴

answer-

1) 5

2) 4

3) 2

4) 5

5) 3

Explanation:

How to solve:-

1) All non zero digits are significant.

2) A zero becomes significant figure if it appears between two non digits.

3) Leading zero or the zeros placed to the left of the number are never significant.

4) Trailing zeros of the zeros placed to the right of the number are significant.

5) In exponential notation, the numerical portion give the number of significant figures.