Rounding Significant Figures

Front

What is rounding significant figures?

Back

Rounding significant figures is the process of reducing the number of digits in a number while maintaining its value to a certain degree of precision.

Front

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

Back

Significant figures are determined by counting all non-zero digits, any zeros between significant digits, and trailing zeros in the decimal portion.

Front

What is 0.658 rounded to 1 significant figure?

Back

0.7

Front

Round 52689 to 3 significant figures.

Back

52700

Front

Round 0.00258954 to 4 significant figures.

Back

0.002590

Front

What is 375.6523 rounded to four significant figures?

Back

375.7

Front

What is 78.5 rounded to one significant figure?

Back

80

Front

What is the rule for rounding up?

Back

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

Front

What is the rule for rounding down?

Back

If the digit to the right of the last significant figure is less than 5, keep the last significant figure the same.

Front

How do you round a number with trailing zeros?

Back

Trailing zeros in a whole number are not significant unless there is a decimal point; they are significant in decimal numbers.