Significant Figures and Rules of Rounding Off questions with solutions

Showing 1–10 of 49 questions

• Multi-correctmediumUnits, Dimensions, Measurements and ErrorsSignificant Figures and Rules of Rounding Off

  Length, breadth and thickness of a uniform strip are measured as 10.5 cm, 0.05 mm and 6.0 μm, respectively. Which option(s) give(s) the volume in cm³ with correct significant figures?

  Select all that apply

  • Option A

    3.2 × 10⁻⁵

  • Option B

    32.0 × 10⁻⁶

  • Option C

    3.0 × 10⁻⁵

  • Option D

    3 × 10⁻⁵

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• MCQeasyUnits, Dimensions, Measurements and ErrorsSignificant Figures and Rules of Rounding Off

  The result of 12.11 + 0.3 + 3.456, reported with correct decimal-place rule, is:

  Options

  • Option A

    15.866

  • Option B

    15.87

  • Option C

    15.9

  • Option D

    16

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• MCQeasyUnits, Dimensions, Measurements and ErrorsSignificant Figures and Rules of Rounding Off

  Round 0.006284 to 2 significant figures.

  Options

  • Option A

    0.0062

  • Option B

    0.0063

  • Option C

    0.00628

  • Option D

    0.00630

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• MCQeasyUnits, Dimensions, Measurements and ErrorsSignificant Figures and Rules of Rounding Off

  A rectangle has measured length 12.4 cm and breadth 3.2 cm. Its area should be reported as:

  Options

  • Option A

    39.68 cm²

  • Option B

    39.7 cm²

  • Option C

    40 cm²

  • Option D

    4.0 × 10¹ cm²

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• IntegereasyUnits, Dimensions, Measurements and ErrorsSignificant Figures and Rules of Rounding Off

  A measured value 48.050 is written in decimal form. Enter the number of significant figures.

  Your answer

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• MCQeasyUnits, Dimensions, Measurements and ErrorsSignificant Figures and Rules of Rounding Off

  A measured length is written as 2.500 m. This notation indicates:

  Options

  • Option A

    1 significant figure

  • Option B

    2 significant figures

  • Option C

    3 significant figures

  • Option D

    4 significant figures

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• MCQeasyUnits, Dimensions, Measurements and ErrorsSignificant Figures and Rules of Rounding Off

  A person measures three masses as 435.42 g, 226.3 g and 0.125 g. According to the rules of significant figures, their sum should be reported as:

  Options

  • Option A

    661.845 g

  • Option B

    661.84 g

  • Option C

    661.8 g

  • Option D

    662 g

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• MatchmediumUnits, Dimensions, Measurements and ErrorsSignificant Figures and Rules of Rounding Off

  Match each number in List 1 with the number of significant figures in List 2 and choose the correct option.

  List 1

  1. 0.00450

  2. 7.000

  3. 100.01

  4. 5 × 10⁶

  List 2

  1. 1 significant figure

  2. 3 significant figures

  3. 4 significant figures

  4. 5 significant figures

  Options

  • Option A

    P-2, Q-3, R-4, S-1

  • Option B

    P-3, Q-2, R-4, S-1

  • Option C

    P-2, Q-4, R-3, S-1

  • Option D

    P-1, Q-3, R-4, S-2

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• MCQeasyUnits, Dimensions, Measurements and ErrorsSignificant Figures and Rules of Rounding Off

  Using significant-figure rules, evaluate 4.52 × 2.1.

  Options

  • Option A

    9.492

  • Option B

    9.49

  • Option C

    9.5

  • Option D

    10

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• MCQeasyUnits, Dimensions, Measurements and ErrorsSignificant Figures and Rules of Rounding Off

  Using the rule of significant figures, evaluate 25.6 - 3.42.

  Options

  • Option A

    22.18

  • Option B

    22.2

  • Option C

    22

  • Option D

    22.180

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