Rounding Numbers to Significant Figures

What is the first significant figure in the number 0.004031?

• 3

• 0

• 1

• 4

In the number 3476, which digit is the second significant figure?

• 7

• 6

• 3

• 4

For the number 0.0040, which digit is the third significant figure?

• 1

• 3

• 4

• 0

When rounding 3476 to two significant figures, what is the result?

• 3400

• 3500

• 3470

• 3480

What is the 'decider' digit when rounding 3476 to two significant figures?

• 7

• 6

• 4

• 3

How do you round 0.004031 to three significant figures?

• 0.0040

• 0.004

• 0.004031

• 0.00403

When rounding decimals, what should you do with trailing zeros?

• Keep them

• Round them down

• Remove them

• Round them up

Why is it difficult to determine the number of significant figures in 4300?

• It could have been rounded

• It has no zeros

• It is a decimal

• It is an even number

If a number like 4300 has been rounded, how many significant figures could it have?

• Five

• Four

• Three

• Two

What is the main takeaway regarding significant figures in exams?

• Always use four significant figures

• Always round to the nearest ten

• Significant figures are not important

• Ambiguity in significant figures should not matter