3rd Grade Math Unit Eleven

3rd Grade Math Unit Eleven - Probability

Check the events below that you are sure will happen:
1. It will rain tomorrow.
2. If you flip a coin, it will land on either the head side or the tail side.
3. You will become a movie star when you grow up.
4. If you roll a six sided die, it will land on one of these numbers: 1,2,3,4,5,6.
If you roll a six sided die, it is more likely to land on an even number.
1. True
2. False
If you spin the following spinner, which color do you have the best chance of landing on?
1. White
2. Blue
Which description below matches the follwoing circle:
1. 1/4 black, 1/2 white, 1/8 blue, 1/2 red, 1/8 yellow
2. 3/8 red, 1/2 white, 1/4 blue, 1/8 yellow, 1/4 black
3. 1/8 black, 1/4 white, 1/8 blue, 3/8 red, 1/8 yellow
4. 1/4 yellow, 1/8 black 1/2 red, 1/8 blue, 1/4 white
Select two events that have a good chance of happening.
1. You will fall asleep tonight.
2. You will take trip to the moon next week.
3. It will snow in Florida on the Fourth of July.
4. The sun will shine sometime this year.
Which color would you expect a spinner to land on most often?
On which colors does this spinner have an equal chance of landing?
1. Red
2. White
3. Blue
4. Yellow
5. Black
On which color are you only two times as likely to land as the color black?
You have a box with two white tennis balls in it. If you want to take out a yellow tennis ball about 2/3 of the time, how many yellow tennis balls should you put in the box?
Which two events are not likely to happen.
1. You will never have to do any homework.
2. You will be given more chores to do as you get older.
3. You will play with your friends next week.
4. You will win the lottery.
Which description of the colors of the balls in the following box, best matches the following results from 100 random draws:

a blue ball 22 times

a white ball 23 times

a yellow ball 51 times
1. 2 white balls, 2 yellow balls, 4 blue balls
2. 2 white balls, 4 yellow balls, 2 blue balls
3. 4 white balls, 2 yellow balls, 2 blue balls
4. 4 white balls, 0 yellow balls, 4 blue balls
If you wanted to have an equal chance of taking out a square in the following bos, you would put in ________ squares.
Which two events would you describe as impossible?
1. It will only rain twice next year.
2. You can walk to the moon.
3. Your Mom will win the school raffle prize.
4. If a bag contains only 100 white marbles, you can still draw out a blue marble.
I have a bag with 14 yellow balls in it. If I wanted to take out a white ball about 1/3 of the time, how many white balls should I put in the bag?