HELP ME WITH SIGNIFICANT FIGURES PLEASE

[From: ] [author: ] [Date: 12-09-04] [Hit: ]

... the answer may be 239 or 240.0. You will want to ask your teacher to be sure.......

EDIT: Now not quite sure of this one. When rounded, the SD becomes 2.... the answer may be 239 or 240.0. You will want to ask your teacher to be sure.

3) 36.84 (36.837 rounds up); Explanation: Again, least amount of SD given. 15.03 has 4, 4.87 has 3, 1.987 has 4. USE [[[3]]]

(Though not asked, for future reference, if there are zeros on the left of the decimal between the decimal and a significant digit or are beyond all significant digits, they are INSIGNIFICANT. So, 100.56 would have 3 SD, 101.56 would have 5 SD, 0100.56 would have 3 SD, and 100.560 would have 4 SD)

Hope this helped :)

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1) 2
2)239
3) dont feel like doing 3 sorry lol

Numbers to the left of the decimal are always signficant
If you are adding/multiplying two numbers. E.g 10+100.0
The answer is 110 because you can only include the amount of places the least accurate number has.

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Tip

Significant figures are normally up to three degrees decimal, you can ignore the rest.
At the left side of the decimal point (whole part) is significant always, you cant ignore even zeros at the right most.

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