Rounding and Significant Figures

Front

What is rounding?

Back

Rounding is the process of adjusting the digits of a number to make it simpler while keeping its value close to what it was. It often involves increasing or decreasing the last digit based on the value of the digits that follow it.

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 98.907 to 1 significant figure?

Back

100

Front

How many significant figures are in the number 0.00400?

Back

3

Front

What is the second significant figure in 0.40520?

Back

0

Front

How do you express the number 5,000 with 3 significant figures?

Back

5.00 x 10^3

Front

What is the first significant figure in 0.0457?

Back

4

Front

What is the rule for determining significant figures in a whole number?

Back

In whole numbers, all non-zero digits are significant, and any zeros to the right of a non-zero digit are significant only if there is a decimal point.

Front

How do you identify significant figures in a decimal number?

Back

In decimal numbers, the first non-zero digit is the first significant figure, and all digits following it are also significant.

Front

What is the significance of trailing zeros in a decimal number?

Back

Trailing zeros in a decimal number are significant because they indicate precision.