Significant digits and scientific notation part 1: determine the number of significant digits in each number and write out the specif significant digits. submit part 1 and part 2 to your professor when completed.
1. 405000.
2. 0.0098.
3. 39..
4. 13.00.
5. 80,000,089.
6. 55,430.00.
7. 0.33.
8. 620.03080.

1. 6 significant digits. 2. 2 significant digits. 3. 8 significant digits. 4. 4 significant digits. 5. 8 significant digits. 6. 7 significant digits. 7. 2 significant digits.

Explanation:

All nonzero digits are significant. All zeros before nonzeros are insignificant. All zeros after nonzeros are insignificant unless they are made for precision of some data. So 405000 may have 3 or 6 significant figures. But usually all zero figures after significant digits are significant.

negative  feedback is when the body ...