Mastering Significant Digits: Easy Tips to Round Numbers Correctly 📊

Learn simple methods to round numbers accurately using significant digits. Visit StudyForce for math help and boost your skills today!

Mastering Significant Digits: Easy Tips to Round Numbers Correctly 📊
Study Force
7.0K views • Sep 29, 2017
Mastering Significant Digits: Easy Tips to Round Numbers Correctly 📊

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To be successful at rounding, make sure you know the rules for counting significant figures.

Rules for rounding:

► If the first digit dropped is 4 or less, the last kept digit remains the same.

For example:

1) Round 0.08245 to 2 significant digits →

2) Round 4.4035 to 3 significant digits →

► If the first digit dropped is 5 or more, the last kept digit goes up by 1.
○ However, if the last kept digit is even and it's followed by a 5 only, the last kept number remains the same.

For example:

1) Round 24.45 to 3 significant digits →

2) Round 24.35 to 3 significant digits →

3) Round 24.451 to 3 significant digits →


Q1. Round 34.5736 to 3 significant figures.

Q2. Round 3.0025 to 4 significant figures.

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Sep 29, 2017

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