I'm a little confused about significant figures. It is my understanding that if when you add or subtract two numbers that the result should have as many decimal places as the term with the least amount of decimal places. For example: 1.55 + 2.666 + 20.23 = 24.446 -> 24.45 Since 1.55 and 20.23 are both terms that have the least amount of decimal places, the answer should have two decimal places. Correct? And for this one: 15.15 - 1.45 = 13.7 -> 13.70 Is this correct? Thanks.