Significant Digits

Question 1

3 Rules for determining number of significant digits

Answer 1

1. All nonzero digits are significant
2. If the last digit is a zero and it’s preceded by a decimal, it’s significant
3. All zeros between significant digits are significant

Question 1

What is a significant digit?

Answer 1

An actual digit that is measured by an instrument

Question 2

What place value do you go out when measuring sig figs?

Answer 2

One place value of a greater precision than the smallest marking on the instrument

Question 3

Adding/ Subtracting rule

Answer 3

Round to least precise placement

Question 4

Multiplying/Dividing rule

Answer 4

Round to lowest number of significant digits (within numbers of the equation)

Question 5

3 Ways to show zeros as significant

Answer 5

1. Add decimal behind zero Ex (40.)
2. Add line above the zero
3. Put into scientific notation