Use scientific notation to express the number 0.013562 to:
| 1) one significant figure | |
| 2) two significant figures | |
| 3) three significant figures | |
| 4) four significant figures | |
| 5) five significant figures |
+118667 ok I'll do it to 3 significant figures
0.013562
ignore all zeros on the left
so the first significant figure is 1
the second is 3
the third might be 5 but since this is the last one that we want look at the next place to see if it should be rounded up. The next digit is 6 (it is big which means it is 5 or more) so the third significant figure is rounded up from 5 to 6
so the answer is 0.0136
+118667 ok I'll do it to 3 significant figures
0.013562
ignore all zeros on the left
so the first significant figure is 1
the second is 3
the third might be 5 but since this is the last one that we want look at the next place to see if it should be rounded up. The next digit is 6 (it is big which means it is 5 or more) so the third significant figure is rounded up from 5 to 6
so the answer is 0.0136
