Significant Figures

Question 1

Significant Figures

Answer 1

All objects measured have some degree of uncertainty associated with it
We can determine the accuracy of a number by the number of significant figures it contains

Question 2

Non-zero digits

Answer 2

All non-zero digits are always significant

Question 3

Zeros between non-zero numbers

Answer 3

Zeros that are between non-zero numbers are always significant

Question 4

Leading zeros

Answer 4

Leading zeros (at the beginning of a number) are never significant; their job is to place the decimal point

Question 5

Trailing zeros

Answer 5

Trailing zeros (at the end of a number) are significant only if the number has a decimal point

Question 6

Zeros to the right of a decimal

Answer 6

Zeros to the right of a decimal and after a non-zero are significant

Question 7

Rounding with the number 5

Answer 7

When rounding with the number 5, all even numbers before stay the same and all odd numbers before get rounded up

Question 8

Adding and subtracting

Answer 8

Use the lowest number of decimal places in the original question for your final answer

Question 9

Multiplying and dividing

Answer 9

Use lowest number of significant digits in the original question for your final answer