Question 1

A class rank is posted as 4.003. The number of significant figures in this value is important for reporting scientific data. How many significant figures does the number 4.003 have?

Accepted Answer

$$4$$

Question 2

Which of the following numbers has exactly three significant figures?

Accepted Answer

$$0.0400$$

Question 3

If you multiply $$2.10 ($$three significant figures) by $$3.0 ($$two significant figures), how many significant figures should your answer have?

Accepted Answer

$$2$$

Question 4

A measurement is recorded as $$0.00560$$ meters. How many significant figures does this measurement have?

Accepted Answer

$$3$$

Question 5

Which of the following best describes why trailing zeros in a number like $$1200$$ may or may not be significant?

Accepted Answer

Trailing zeros are only significant if there is a decimal point.

Question 6

You are given the value $$0.00450$$ grams. How many significant figures does this value have?

Accepted Answer

$$3$$

Question 7

A student reports a measurement as $$3.20 	imes 10^2$ meters. How many significant figures are in this value?

Accepted Answer

$$3$$

Question 8

Which of the following numbers has four significant figures?

Accepted Answer

$$0.004560$$

Question 9

When adding $$1.23$$ and $$2.1$$, how many decimal places should the answer have?

Accepted Answer

$$1$$

Question 10

A scientist measures a value as $$0.0700 kg. $$Which statement is true about the significant figures?

Accepted Answer

There are three significant figures.

Significant Figures and Scientific Notation in Physics Calculations

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