Significant Digit Practice

Front

What is the definition of significant digits?

Back

Significant digits (or 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 any trailing zeros in the decimal portion.

Front

What is the difference between accuracy and precision?

Back

Accuracy refers to how close a measured value is to the true value, while precision refers to how consistently repeated measurements yield the same result.

Front

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

Back

Count all non-zero digits, any zeros between significant digits, and trailing zeros in the decimal portion. Leading zeros are not counted.

Front

What is the rule for significant figures in addition and subtraction?

Back

The result should be rounded to the least number of decimal places of any number in the operation.

Front

What is the rule for significant figures in multiplication and division?

Back

The result should be rounded to the least number of significant figures of any number in the operation.

Front

How many significant figures are in the number 0.00456?

Back

3 significant figures (the digits 4, 5, and 6).

Front

How many significant figures are in the number 100.0?

Back

4 significant figures (the digits 1, 0, 0, and the trailing zero after the decimal).

Front

How many significant figures are in the number 2300?

Back

2 significant figures (the digits 2 and 3, unless specified otherwise with a decimal point).

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.

Front

What is the significance of leading zeros in a number?

Back

Leading zeros are not significant; they only serve to position the decimal point.