Why are sig figs important?

How many integers are between 1 and 100? When two angles are same side interior angles? What is the circumference of a 4 in diameter? What is 24 divided by 3 times 2 equal? What is the bar at the top of word called? How many obtuse angles in a rhombus? What is 700 multiplied by 3 percent and divided by 12 percent? How old will you be if you were born in 1979? Does the order you perform operations in numerical expression matter? Which number doesnt belong 4.5 2.53 19.5 5.9 517? What is 6a-a-a-a? Is an 8 inch square pan equal to an 8 inch round pan? Why is the square root of 2 an irrational number? How do you do multiplication whole numbers? How do you find out about an old credit card history if you don't have the card account number? What is pedantically exact meaning? Is 75 degrees F too cold to go swimming in? How can you figure out the y-intercept is? How do you write ordinal numbers? How many tenths in 0.79?