Q: How are significant figures use in calculations?

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The least number of significant figures in any number of the problem determines the number of significant figures in the answer.

4 and 3 respectively.

The least number of significant figures in any number of the problem determines the number of significant figures in the answer.

when rounding you want to choose an answer with the lowest significant figures to have a better answer choice

You make you're calculations using has many (or more) significant figures as requested without any further considerations until you get to the final result... You reduce the final results significant figures to the requested one or add zeros at the end to match it if it is an exact result

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The least number of significant figures in any number of the problem determines the number of significant figures in the answer.

4 and 3 respectively.

If they did not use rules all their calculations would simply lead to random digits!

There are many things you could use to teach significant figures successfully such as food. M n Ms. are an excellent food to use to teach significant figures.

when rounding you want to choose an answer with the lowest significant figures to have a better answer choice

The accuracy of the measurement device determines the number of significant figures that should be retained in recording measurements.

Significant figures are very important when it comes to calculations. If the mass of an electron is 9.10939 x 10-31 then its significant figures are: 9 x 10^-31( correct 1 significant figure), 9.1 x 10^-31 kg ( correct to 2 significant figures), 9.11 x 10^-31 (correct to 3 significant figures), and 9.109 x 10^-31 (correct to 4 significant figures).

Use the rules of significant figures to answer the following : 22.674 * 15.05. Answer: 341.2