Question

Round 0.9999 to 3 significant figures

Answer 1

Answer:

By significant rule last 9 should be removed

So it will be 0.999

It has 3 significant figures.

Step-by-step explanation:

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Answer 2

Given : 0.9999

To Find : Round 0.9999 to 3 significant figures

Solution:

All non-zero digits are significant.

The leftmost nonzero digit is the first or most significant figure.

If there is a decimal point, the rightmost digit is the last or least significant figure

If there is no decimal point explicitly shown, the rightmost non-zero digit is the least significant figure

All digits between the most significant figure and the least significant figure are significant.

0.9999

Number of significant figures  = 4

Round the number by removing last 9  

as 9 ≥ 5

Hence there will be increase in the digit

so it becomes  1.000

But there are still 4 significant figures

Round the number by removing last 0

as 0 < 5 hence remaining number remains same

so 1.00

Hence 0.9999 rounded to 3 significant figures is 1.00

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