Measured Numbers

Question 1

Measured Numbers

Answer 1

• not exact

- only right down numbers that are correct (significant figures)

Question 2

placeholder zeroes

Answer 2

• they are there to put the actual correct digits in the right place
• not sig figs

Question 3

zeroes and significant digits

Answer 3

• zeroes at the end of integers are not significant… Unless you add a bar or a decimal point
• zeroes at the beginning of a decimal are not significant, zeroes at the end of a decimal are significant