Question

Round the following numbers to three significant figures:
1. 0.50845
2. 3.056x10^-5
3. 147.86
4. 26355

Answer 1

1. 0.508
2. .00003056
3.148
4.263x10^4
not sure about 3 and 4

Answer 2

number 4 should be 264^4

Answer 3

wouldn't number 2 be .0000305 considering the zero between the 3 and 5 is counted as a significant number because of its position unlike the first several zeros?

Answer 4

1.) 0.508
2.) 3.06*10^-5
3.) 148.
4.) 2.64*10^4