Question

convert numbers to 3 significant figures by rounding appropriately

2500.
0.0067
54.52

Answer 1

@lgbasallote

Answer 2

Have you learned about sig figs yet?

Answer 3

nope

Answer 4

how i get 3 sig figs for the first one

Answer 5

would it be 300

Answer 6

1) ALL non-zero numbers (1,2,3,4,5,6,7,8,9) are ALWAYS significant.
2) ALL zeroes between non-zero numbers are ALWAYS significant.
3) ALL zeroes which are SIMULTANEOUSLY to the right of the decimal point AND at the end of the number are ALWAYS significant.
4) ALL zeroes which are to the left of a written decimal point and are in a number >= 10 are ALWAYS significant.
A helpful way to check rules 3 and 4 is to write the number in scientific notation. If you can/must get rid of the zeroes, then they are NOT significant.

Answer 7

2500 is 2 sig figs to get it to 3 it needs to be 2.50x10^3
0.0067 is 4 sig figs to get to 3 it needs to be 6.70x10^-3
54.52 is 4 sig figs to get to 3 it needs to be 5.45x10^1

Answer 8

ohhhh ok got it

Answer 9

Try and remember the rules if you can it will help you on tests. Its easiest to remember that anything that isnt a zero is significant and then you just have to remember which zeros are and which arent. Hope that helped