Precision in Significant Digits and Rounding

Why is precision crucial in measurements?

• It is only important in the medical field.

• It makes measurements easier to read.

• It can save money and lives.

• It has no real impact.

Which measurement is more precise, 7 cm or 7.3 cm?

• 7 cm

• 7.3 cm

• Cannot be determined.

• Both are equally precise.

Why is measuring in smaller units considered more precise?

• Larger units are always imprecise.

• They are universally accepted.

• They provide more detail in measurement.

• Smaller units are easier to use.

What is the significance of measuring in ounces instead of pints?

• There is no difference in precision.

• Ounces allow for more precise measurements.

• Ounces are easier to convert.

• Pints are not a valid unit of measurement.

What makes a digit significant?

• Positioned to the left of all non-zero digits.

• All of the above.

• Positioned to the right of the decimal.

• Being a non-zero digit.

Are zeros between significant digits considered significant?

• No, never.

• Only if they are to the left of the decimal.

• Only if they are to the right of the decimal.

• Yes, always.

How many significant digits are in the number 290.01?

• 5

• 3

• 2

• 4

Why are trailing zeros to the right of a decimal considered significant?

• They indicate precision.

• They are placeholders.

• They are not considered significant.

• They represent large numbers.

In the operation 45.1 + 19.45, to how many significant digits should the answer be rounded?

• 5

• 4

• 3

• 2

What is the correct number of significant digits for the product of 6.4 and 2.15?

• 4

• 1

• 2

• 3