Significat Figures

This quiz focuses on identifying significant figures, applying rounding rules, performing calculations using significant figure conventions, interpreting measurements, and expressing answers with proper precision

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Views #: 274

Questions #: 31

Time: 29 minutes

Pass Score: 80.0%

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What do significant figures represent in a scientific measurement?

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The exact value of a measurement

The limits of certainty in a measurement

Only the digits before the decimal point

The number of units used

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A ruler measurement is reported as 1.36 cm. Which digit is estimated?

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None of the digits

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How many significant figures are present in the measurement 36.7 m?

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How many significant figures are in 0.006606 s?

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How many significant figures are in 2,002 kg?

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How many significant figures are in 306,490,000?

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How many significant figures are in 65.080 kg?

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Addition With Significant Figures

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Express the answer to the proper number of significant figures: \(101.2 + 18.702\)

119.902

119.90

119.9

120

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Subtraction With Significant Figures

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Express the answer to the proper number of significant figures: \(202.88 - 1.013\)

201.867

201.87

201.9

202

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Mixed Operations

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Express the answer for \(3.445 + 90.83 - 72.4\) using the correct significant figures.

21.875

21.88

21.9

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Division With Significant Figures

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Evaluate \(23 \div 448\) using the correct number of significant figures.

0.051339

0.051

0.0513

0.05

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What happens if the first dropped digit is 5 or greater?

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Always round down

Always round up

Remove the digit without changing the number

Add a zero

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How many significant figures are in 0.000601 m?

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When multiplying or dividing measurements, the final answer should contain

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The most decimal places

The least decimal places

The same number of significant figures as the value with the fewest significant figures

Exactly four significant figures

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When adding or subtracting measurements, the final answer should be limited by

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The number with the greatest value

The least number of decimal places

The greatest number of significant figures

The smallest whole number

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Classify the zeros in the number 0.04050

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All zeros are significant

Only the leading zeros are significant

Leading zeros are not significant, trailing zeros after the decimal are significant

No zeros are significant

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Counting Significant Figures in Scientific Notation

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How many significant figures are in \(6.02 \times 10^{23}\)?

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Round 7.8462 to three significant figures

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7.84

7.85

7.846

7.8

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Which value is considered an exact number and therefore has unlimited significant figures?

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12.0 g

4 rulers

0.045 L

9.81 m/s²

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How many significant figures are in 4500.?

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A balance reports a mass of 0.0450 g. What is the final significant digit?

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The last 0

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Addition Practice

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Evaluate \(14.6 + 2.37 + 0.552\) using proper significant figures.

17.522

17.52

17.5

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Multiplication Practice

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Evaluate \(4.56 \times 1.4\) using proper significant figures.

6.384

6.38

6.4

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Explanation

Drag the correct description to each type of zero

2 pts

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Leading zeros are (1). Embedded zeros are (2).

Please drag and drop the selected option in the right place or type it instead

significant

not significant

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Arrange the steps used when reading a measurement with significant figures

2 pts

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Please drag and drop the options to sort them

Estimate the final digit

Read all certain digits

Report the measurement

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Classify each statement under the correct category

3 pts

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Statements

×Trailing zeros after a decimal point

×Leading zeros before a decimal

×Embedded zeros

×Nonzero digits

Significant

Not Significant

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Explanation

Enter the scientific notation form of the number 0.00045.

2 pts

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Estimate the measurement shown by the arrow.

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2.8

2.9

3.0

3.5

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Which of the following values contain exactly four significant figures?

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0.004560

4500

4.500

40.05

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Explanation

Round 0.009876 to two significant figures

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0.0098

0.0099

0.010

0.00988

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Which statement about significant figures is correct?

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All zeros are always significant

Measurements should include all certain digits and one estimated digit

Calculated answers should always contain ten digits

Leading zeros are always significant

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Year 10