Trimester 3 Unit 2

Question 1

What are the 4 rules for significant figures?

Answer 1

Nonzero numbers are always significant, zeros between nonzero numbers are always significant, all final zeros to the right of the decimal are significant, all placeholder zeros are not significant.

Question 2

What do you do for sig figs if the decimal is present?

Answer 2

Start on the Pacific side (left)- start counting at the first nonzero to the end.

Question 3

What do you do for sig figs if the decimal is absent?

Answer 3

Start at the Atlantic side (right)- start counting at the first nonzero at the end.

Question 4

How do you find the sig fig when using addition or subtraction?

Answer 4

The number of decimal places in the result equals the number of decimal places in the least precise measurement. (Use the smallest number of decimal places in the equation)

Question 5

How do you find the sig fig when using multiplication or division?

Answer 5

Round the answer to the least number of sig figs in the problem.

Question 6

What is a conversion factor?

Answer 6

A statement used to change one set of units to another, by multiplying or dividing

Question 7

What do you do if your metric conversion is getting bigger?

Answer 7

Divide

Question 8

What do you do if your metric conversion is getting smaller?

Answer 8

Multiply

Question 9

What is scientific notation?

Answer 9

The way that scientists easily handle very large numbers or very small numbers.

Question 10

How do you multiply with scientific notation?

Answer 10

Multiply the coefficients and add exponents.

Question 11

How do you divide with scientific notation?

Answer 11

Divide the coefficients and subtract the exponents.