Significant Figures Flashcard

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 do you round a number to a specific number of significant figures?

Back

To round a number to a specific number of significant figures, identify the last significant digit you want to keep, look at the digit immediately to the right, and round up if it's 5 or greater.

Front

Round the number 0.09987 to 3 significant figures.

Back

0.0999

Front

How many significant figures are in the number 100.000 cL?

Back

6

Front

When multiplying numbers, how do you determine the number of significant figures in the result?

Back

The result should have the same number of significant figures as the measurement with the least number of significant figures.

Front

Solve and use the correct sig figs: 15.65 x 0.23.

Back

3.6

Front

How many significant figures are in the number 2700?

Back

2 (unless specified otherwise with a decimal point).

Front

How many significant figures does the number 76.0128 have?

Back

6

Front

What is the rule for counting significant figures in a number with a decimal point?

Back

All non-zero digits are significant, any zeros between significant digits are significant, and trailing zeros in the decimal portion are significant.

Front

What is the rule for counting significant figures in a whole number without a decimal point?

Back

Only the non-zero digits are significant; trailing zeros are not significant unless specified.