Understanding Significant Digits

What is the significance of the estimated digit in a measurement?

• It is always zero.

• It is the last digit in a measurement and is estimated.

• It is the first digit in a measurement and is estimated.

• It is not considered significant.

How many significant digits are in the measurement 301 milliliters?

• Four

• Three

• Two

• One

What is the significance of zeros between two non-zero digits?

• They are only significant if preceded by a decimal.

• They are not significant.

• They are always significant.

• They are only significant if followed by a decimal.

What does a line over a zero in a measurement indicate?

• The zero is estimated.

• The zero is not significant.

• The zero is a placeholder.

• The zero is significant.

How many significant digits are in the measurement 5.0 grams?

• Two

• Four

• One

• Three

How can scientific notation help clarify the number of significant digits?

• By clearly showing all significant digits.

• By removing all zeros.

• By changing the measurement unit.

• By adding extra zeros.

How many significant digits are in the measurement 36.40 kilograms?

• Three

• Four

• Five

• Two

In scientific notation, what does the exponent indicate?

• The precision of the measurement.

• The estimated digit.

• The direction and number of places the decimal point is moved.

• The number of significant digits.

What is the significance of trailing zeros after a decimal point?

• They are only significant if preceded by a non-zero digit.

• They are only significant if followed by a non-zero digit.

• They are significant.

• They are not significant.

What does the measurement 0.0092 meters have in terms of significant digits?

• Two

• Three

• Four

• One