Complete the following cmputations. Round your answer to the correct number of s
ID: 862889 • Letter: C
Question
Complete the following cmputations. Round your answer to the correct number of significant figures.
102.794 - 61.9 = ______________ # of significant figures in answer _______________
4.29 x 10-3 + 3.99 x 10-4 = ______________ # of significant figures in answer _______________
0.0019 / 0.0352 = ______________ # of significant figures in answer _______________
9 x 10-2 * 1.73 x 103 = ______________ # of significant figures in answer _______________
Complete the following cmputations. Round your answer to the correct number of significant figures. 102.794 - 61.9 = ______________ # of significant figures in answer _______________ 4.29 x 10-3 + 3.99 x 10-4 = ______________ # of significant figures in answer _______________ 0.0019 / 0.0352 = ______________ # of significant figures in answer _______________ 9 x 10-2 * 1.73 x 103 = ______________ # of significant figures in answer _______________Explanation / Answer
1. 102.794 - 61.9 = 40.894
We need to round the answer to the same decimal place as the least-accurate number.
61.9 has one decimal point
The answer is 40.9
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4.29 x 10^-3 + 3.99 x 10^-4 = 4.689 x 10^-3
We need to round the answer to the same decimal place as the least-accurate number.
It has two digits after decimal point.
So, the answer is 4.69 x 10^-3
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0.0019 / 0.0352 = 0.053972
We need to round the answer to the same number of significant digits as the least-accurate number.
0.0019 has two sig fig.
So, the answer is 0.054
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9 x 10^-2 * 1.73 x x10^3 = 155.7
We need to round the answer to the same number of significant digits as the least-accurate number.
9 has 1 sig fig.
So, the answer is 200