# Chemistry

i have to round each to 3 significant figures, then to one significant figure, in standard form, how?
a) 87.073 m
b) 4.3621 x 10^8 m
c) 0.01552 m
d) 9009 m
e) 1.7777 x 10^-3 m
f)629.55 m

1. 👍 0
2. 👎 0
3. 👁 167
1. (a) 87.073 -> 87.1 -> 90
(b) 4.3621 -> 4.36 -> 4
and so on

what do you get?

1. 👍 0
2. 👎 0
posted by Steve
2. okay, so e) would be 2.77->2 but how would the others be to 1 significant number if there over?

1. 👍 0
2. 👎 0
posted by sheryl
3. (e) 1.7777 -> 1.78 -> 2

I have no idea what if there over? means.

In each case, round to 3 digits, then round that result to 1.

1. 👍 0
2. 👎 0
posted by Steve

## Similar Questions

1) Round 578.683 m, 47.3333 kg, and 789.5 cm to four significant figures. 2) Find the weight of a 12.25 kg dog. Round your answer to the correct number of significant figures. Use weight=massxfree-fall acceleration. 3) Round

asked by Andra on September 28, 2014
2. ### Math

Rounding to significant figures 99.98 to 3 significant figures Can it apply to this number as if I round to 100 this is one significant figure or we keep it as 99.9. Please clarify And same number to 2 sig figure Will it be 100?

asked by NJay on October 6, 2017
3. ### Chemistry

I have a Chemistry question which should be very simple but I do not know what significant figures are. Assuming the following numbers are measurements and using the rules for significant figures, determine the answer for the

asked by Pablo on January 10, 2013
4. ### math

write 480 in a) 1 significant figure b) 2 significant figures c) 3 significant figures d) 4 significant figures

asked by Jack on August 23, 2010
5. ### physics

round of the following digits- 3.65*105(upto are place of decimal) 0.882026(upto three significant figures) 311.299(upto four significant figures) 4.783(upto two significant figures)

asked by yashaswi on August 26, 2016
6. ### Chemistry

Hi guys! I just learned about significant figures today, and I have a question about them. My teacher gave us a problem where all values have what I think is four significant figures (like 44.56) except the value for temperature

asked by Allie on September 9, 2015
7. ### Science

I'm a little confused when it comes to significant figures. Where it doesn't make sense to me is when zeros come before and after a number. For example: My book states that zeros that come before a digit are NEVER significant. Now

asked by Anonymous on December 9, 2009
8. ### Significant figures

How would I go and express these numbers with 3 significant figures in normal notation? a)15.08 b)1444 c)83,909 d)0.524 e)0.0254 for d and e aren't they already with 3 significant figures and also in normal notation? for a, b, and

asked by ~christina~ on September 2, 2007
9. ### Chemistry

answear in standard exponential form with correct number of significant figures 0.57 cm X 0.86 cm X 17.1 cm= what don't you understand? Please be specific. You may have two significant figures in the answer.

asked by Bryan on January 15, 2007
10. ### math

perform this operation to the correct significant figure. 2.0cm × 0.01m in the correct significant figure. should the answer be in two or one significant figures

asked by jay on January 19, 2016

More Similar Questions