sig figs

What does Rule 4 of significant figures state?

Zeros at the end of a number and to the right of the decimal point are significant.

Give an example of Rule 4 with 5 significant figures.

12.300 → 5 significant figures (the zeros after the decimal are significant)

How many significant figures are in 0.0400?

3 significant figures (Rule 4 – trailing zeros after decimal count)

How many significant figures are in 7.00?

3 significant figures (Rule 4 – zeros after a decimal and a non-zero number are significant)

What does Rule 5 of significant figures state?

Zeros at the end of a number without a decimal point are not significant — they’re just placeholders.

How many significant figures are in 1500?

2 significant figures (Rule 5 – trailing zeros without a decimal are not significant)

How many significant figures are in 20,000?

1 significant figure (Rule 5 – only the leading non-zero digit is significant)

How many significant figures are in 300.?

3 significant figures (the decimal makes the trailing zeros significant)