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The answer is not as simple as that. You have to know the accuracy of the measurements or values that are supplied to use. Also, the accuracy requirements of the calculation matter.
Here is a choice:
If calculations were made to determine the pitch of a roof, then measurements and requirements might not dictate 3 place precision. While accuracy in carpentry is important, one or two digits are about the limit of most woodworking measurement tools.
However, if we were trying to calculate the launch trajectory of a space craft to its destination, we would use ten (10) or more significant figures and we would insist on similar accuracy in the measured distances and values used, if not better. Ten significant digits might not be accurate enough. That would depend on how far away the target is.
No one wants to miss Mars after traveling that far! Especially those who made the trip.
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When doing dimensional analysis when do you round to the correct number of significant figures?
The least number of significant figures in any number of the problem determines the number of significant figures in the answer.
How do you round 1100 to 3 significant figures?
1100 to 3 significant figures is 1.10e3
How do you round 2808 into 3 significant figures?
2808 into 3 significant figures is 2810
How do you round 0.004560 to 2 significant figures?
0.004560 to two significant figures results in: 0.0046
What is 0.0000386241 to 2 significant figures?
0.000039 as you have to round it up. 3 and 8 are the significant figures but as you must round up, the answer becomes 0.000039.
When doing dimensional analysis when do you round to the correct number of significant figures?
The least number of significant figures in any number of the problem determines the number of significant figures in the answer.
How do you round 17.9867 to 3 significant figures?
17.9867 to 3 significant figures is 18.0
How do you round 1100 to 3 significant figures?
1100 to 3 significant figures is 1.10e3
How do you round 2808 into 3 significant figures?
2808 into 3 significant figures is 2810
How do you round 0.0000004799 into 3 significant figures?
0.0000004799 into 3 significant figures is 4.80e-7
How do i Round off 88930371.007 to 2 significant figures?
88930371.007 to 2 significant figures is 89000000
Round 0.0034088 in three significant figures?
0.0034088 in three significant figures would be 0.00341
How do you round 8468 to two significant figures?
8468 rounded to 2 significant figures is 8500
How do you round 0.004560 to 2 significant figures?
0.004560 to two significant figures results in: 0.0046
What is 0.035550 rounded off to two significant figures?
0.036 The significant figures are indicated by the square brackets 0.0[35550], so we round this part of the figure.
What is 0.0000386241 to 2 significant figures?
0.000039 as you have to round it up. 3 and 8 are the significant figures but as you must round up, the answer becomes 0.000039.
How do you round 10.989 to three significant figures?
The number 10.989 rounded to 3 significant figures is 11.0
