to find probability, you make a fraction.

top = number of times what you want to happen can happen.

bottom = total number of things that can happen.

since there are 12 marbles in the bag, 12 goes on the bottom.

in the first example, you want red. there are 7 red marbles so 7 goes on top.

in the 2nd examples you want blue. there are 5 blue marbles, so 5 is on top.

the answer can be given as:

- fraction (REDUCE the fraction)

- percent

- decimal

Explaination for previous question:

• there are 5 quarters, so 5 goes on the top of the fraction.

• there are 11 total coins in the bag.

• 5+2+4 = 11

• answer = 5/11

explaination fro previous question

• one side of the coin has "heads" so 1 is the top of the fractoin

• there are 2 sides on a coin so 2 is the bottom of the fraction

• answer = 1/2

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Examination of previous question

• there are 3 red marbles.

• there are 9 total marbles

• 3/9 reduces to 1/3

• answer = 1/3