Rounding Sig Figs

Front

What is 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 1 significant figure?

Back

To round a number to 1 significant figure, identify the first non-zero digit and round the number based on the digit immediately following it.

Front

Round 432 to 1 significant figure.

Back

400

Front

How do you round a number to 3 significant figures?

Back

To round a number to 3 significant figures, identify the first three non-zero digits and round based on the digit immediately following the third significant figure.

Front

Round 3,953 to 3 significant figures.

Back

3950

Front

What is the rule for rounding numbers?

Back

If the digit to be dropped is less than 5, round down. If it is 5 or greater, round up.

Front

Round 35,854 to 3 significant figures.

Back

35,900

Front

How do you express a number in scientific notation?

Back

To express a number in scientific notation, write it as a product of a number between 1 and 10 and a power of 10.

Front

Round 0.30473 to 3 significant figures.

Back

0.305

Front

What is the significance of trailing zeros in decimal numbers?

Back

Trailing zeros in decimal numbers are significant because they indicate precision.