Question

How many significant figures are there in each of the following measurements

23
1.498
283.3
9.855
76.414
32.8
107
0.238
8.0335
0.05587
307
1.40082
0.00058900
4500
350000
180.0

Answer 1

2
4
4
4
5
3
3
3
5
5
3
6
3
2
2
2

Answer 2

0.05587 has 4
0.00058900 has 5
180.0 has 4

Answer 3

the 0's in 180.0 are placeholders.

Answer 4

i thought that trailing zeros to the right of the decimal point were significant

Answer 5

how about 3.50 times 10^3
1.604 times 10^4
14.380
0.0804
3.45000