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How would you record a measurement of 16490 grams using only 2 significant figures?
The rule when rounding off numbers is "If the first figure to be discarded is 5 or more then the previous figure is increased by 1". When 16490 is rounded off to 2 significant figures then the first figure to be discarded is 4. As this is less than 5 then the previous figure (6) is not increased by 1. 16490 to 2 significant figures is 16000.
How many significant figures are in 9.3220895?
8 By definition, all the figures are significant (no rounding off appears to have taken place). There are eight significant figures.
Round off 58.5422 to three significant figures?
45.0 is the 44.981 to 3 significant figures.
What is 0.002305 rounded to three significant numbers?
0.00755 Any zeros that are before an additional number do not count. Thus, "0.00" would not count as significant figures. The first significant figure is the "7", with the "5" following it. With the second five (in my answer), "4" was rounded up to "5" because the number behind the "4" was a "6", thus the "4" rounds up.
What is 1042 L rounded off to two significant digits?
To write 1042 L to two significant figures, you'll need to use scientific notation. It can't be 1000 L, because that has only one significant figure, because trailing zeros with no decimal point are not significant. To write 1042 L to two significant figures, you need to write it as 1.0 × 10³ L.
