Rounding Sig Figs

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 part.

Front

How do you determine the number of significant figures in a number?

Back

Count all non-zero digits, any zeros between them, and trailing zeros in a decimal number. Leading zeros are not counted.

Front

Round 0.04967 to 2 significant figures.

Back

0.050

Front

Round 432 to 1 significant figure.

Back

400

Front

Round 0.30473 to 2 significant figures.

Back

0.30

Front

Round 432 to 2 significant figures.

Back

430

Front

Round 3,953 to 1 significant figure.

Back

4000

Front

What is the rule for rounding numbers?

Back

If the digit to the right of the last significant figure is 5 or greater, round up. If it is less than 5, round down.

Front

What is the significance of trailing zeros in decimal numbers?

Back

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

Front

How do you round a number with a decimal to a specific number of significant figures?

Back

Identify the last significant figure you want to keep, look at the next digit to decide whether to round up or down.