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Perform the followingmathematical operation, andreport the answer to theappropriate number ofsignificant figures.7.55 + 17.002 = [ ?=

Perform The Followingmathematical Operation Andreport The Answer To Theappropriate Number Ofsignificant Figures755 17002 class=

Sagot :

7.55 + 17.002 = ?

First, we have to determine the number of significant figures that each number has.

7.55: 3 SF and 2 SF after the decimal point.

17.002: 5 SF and 3 SF after the decial point.

Second, perform the mathematical operation as we usually do.

7.55 + 17.002 = 24.552

Finally we determine the correct number of SF. When adding or substracting the rule says: "The final answer may have no more SF after the decimal point than the least number of significant figures in the operation". Since 7.55 has 2 SF after the decimal point, we must round the result of the addition to the second place to the right of the decimal point.

Rounding 24.552 we get 24.55.

Answer: 24.55

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