math skills

Front

What are significant figures?

Back

Significant figures are the digits in a number that contribute to its precision. This includes all non-zero digits, any zeros between significant digits, and trailing zeros in the decimal portion.

Front

How many significant figures are in the number 0.012 km?

Back

2

Front

How many significant figures are in the measurement 153.0 mL?

Back

4

Front

How many significant figures are in the number 0.456?

Back

3

Front

What is the formula for calculating percent error?

Back

Percent Error = |(Measured Value - Actual Value) / Actual Value| x 100%.

Front

What is the percent error if a student measures 12 cm but the actual length is 14.25 cm?

Back

15.79%.

Front

How many significant figures are in the number 0.000008?

Back

1

Front

What is the rule for counting significant figures in a number with leading zeros?

Back

Leading zeros are not counted as significant figures.

Front

What is the rule for counting significant figures in a number with trailing zeros?

Back

Trailing zeros in a decimal number are counted as significant figures.

Front

How do you determine the number of significant figures in a whole number without a decimal point?

Back

Only count the non-zero digits and any zeros between them.