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The first one is 6.07 * 10^-15 How many sig figs? I put 3, is that correct?
ok 0.003840 How man sigfigs? 4?
17.00 4 sig figs?
8 * 10^8 I think this one is 1 sig fig?
lol ok - 463.8052 7 sig figs
300 has 1 301 has 3 and 300. has 3 ?
yes to all
Awesome, so 100 has 1 and 1.0 * 10^2 has 1 as well right?
almost 1.0 * 10^2 has 2, since we count the 0 after a decimal point
oh ok - so would 1.00 * 10^3 be 3?
100. 3 s.f.?
0.0048 has 2? 0.00480 has 3? 4.80 * 10^-3 has 3? 4.800 * 10^-3 has 4?
yes to all
ok what about rounding to sig figs? 0.00034159 to three digits? how do i do that
well, 0.00034159 has 5 sig figs, so we look at the third digit from the right (1). then we look at 5 (the next digit) to see whether to keep 1 or round to 2. since it's 5 we round 1 to 2 like so: 0.00342
ok but what happened to the third zero?
oh whoops 0.000342
haha ok thats what i thought the next one is 103.351 * 10^2 to 4 digits. 103.4?
yup, but don't forget the 10^2
ok so i keep that. Next one is: 17.9915 to 5 digits 17.992
ok and the last one: 3.365 * 10^5 to 3 digits 3.37 * 10^5 ?
btw you are awesome, my teach gave homework without teaching (which is ok except for the fact that I don't have my textbook yet lol)