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Q: In adding the measurements 11.074 m 18.2 m and 16 .943 m what should be the number in the significant result?

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Three significant figures: two before the decimal point and one after.

Forget about "significant figures"; those are used to determine the precision when you multiply or divide. When adding numbers, the rule is that the result should be rounded according to the precision of the least accurate of the addents. In this case, to one decimal digit.

sum

If the conversion factor is exact, then the number of significant figures in the answer is the same as the number of significant figures in the original number.If the conversion factor is an approximation, then the number of significant figures in the result is the lesser of this number and the number of significant figures in the original number.

They are both binary operations. The inverse of adding X to a number is the subtraction of X from the result and, conversely, subtracting Y from a number is the inverse of adding Y to the result.

Related questions

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

Three significant figures: two before the decimal point and one after.

Forget about "significant figures"; those are used to determine the precision when you multiply or divide. When adding numbers, the rule is that the result should be rounded according to the precision of the least accurate of the addents. In this case, to one decimal digit.

the precision of the answer must have the same number of significant digits as the measurement with the least significant digits- the site explains the rules and how to identify significant digits

adding its opposite?

No - adding an odd quantity of odd numbers will always result in an odd number.

The number of significant figures should be equal to the significant figures in the least precise measurement.

sum

If the conversion factor is exact, then the number of significant figures in the answer is the same as the number of significant figures in the original number.If the conversion factor is an approximation, then the number of significant figures in the result is the lesser of this number and the number of significant figures in the original number.

They are both binary operations. The inverse of adding X to a number is the subtraction of X from the result and, conversely, subtracting Y from a number is the inverse of adding Y to the result.

As a result of the rule that you use the definition of the term - such as significant digits - when finding them for a number.

multiplying