Quarter 3 exam

Percent discounts

100

What is 50% of 300?

150

200

What is 25% of 1,000?

250

300

In the school catalog a snack normally cost 50 Chrome. Today the snacks are on sale for a 10% discount! How much do they cost after the sale?

45

400

Normally, drum lessons cost 300 dollars at the music store. Today, they are on sale for a 25% discount! How much is the new price for drum lessons?

225

500

Normally, a new guitar cost 300 dollars at the music store. Today, they are on sale for a 75% discount! How much is the new price for a guitar?

75

Probability (%, decimal, fraction)

100

You have a bag of 28 marbles. 10 are green, 10 are blue, 5 are red, and 3 are yellow. What is the probability you will reach into the bag and choose a green or red marble? Write as a fraction and ratio.

P (green or red)= 15/28 or 15:28

200

You have a bag of 28 marbles. 10 are green, 10 are blue, 5 are red, and 3 are yellow. What is the probability you will reach into the bag and NOT choose a green or blue marble? Write as a fraction and ratio.

P (NOT green or blue)= 8/28 or 8:28

300

You are playing a game of chance with an 8-part spinner. What is the probability of spinning a 1, 2, or 3? Write your answer as a DECIMAL.

Answer: 3/8 = .37

400

You are playing a game with a 6-sided dice. What is the probability you will roll a 2, 4, 5, or 6? Write the probability as a PERCENT.

P (2, 4, 5, or 6)= 4/6 = 66%

500

You are playing a game with a 6-sided dice. What is the probability of NOT rolling a 1? Write the probability as a PERCENT.

P (not rolling a 1) = 5/6 = 83%

Fair vs. unfair

100

When is a game fair? Write your answer in a complete sentence.

A game is fair when each player has an equally likely chance of winning. (Their probabilities are equal)

200

When is a game of chance unfair? Answer in a complete sentence.

A game of chance is unfair when one player has a higher probability of winning than another.

300

Mr. V and Ms. kelly are playing a game of chance with an 8-part spinner. Mr. V wins when the spinner lands on 1, 2, and 3. Ms. kelly wins when the spinner lands on 8, 5, and 4. If the spinner lands on 6 or 7, they spin again. What is each players probability? Is this game fair or unfair and why?

P(Mr. V win)= 3/8 P (Ms. Kelly win) = 3/8 This game is fair because each player has an equally likely chance of winning.

400

Mr. V and Ms. kelly are playing a game of chance. They put the letters to the word MISSISSIPPI in a bag. Mr. V wins if he pulls out a vowel. (a, e, i, o, u) Ms. Kelly wins if she pulls out a consonant. What is each player's probability of winning? Is this game fair or unfair, and why?

P (Mr. V wins)=4/11 P(Ms. Kelly wins)=7/11 This game is unfair because Ms. kelly has a higher probability of winning than Mr. V.

500

Design your own fair or unfair game with your partner. 1. Decide if you are using a 6-sided dice or 8-part spinner. 2. How are you going to make your game fair or unfair?

Fair games=equal probabilities, unfair games=unequal probabilities.

Probability predictions

100

Mr. Cady did a survey of Wisconsin's favorite Ice Cream Flavors. 8 like peppermint, 4 like vanilla, 5 like strawberry, 5 like mint, and 3 like other. What is the probability that a scholar will like vanilla?

P (vanilla) = 4/25

200

Mr. Cady did a survey of Wisconsin's favorite Ice Cream Flavors. 8 like peppermint, 4 like vanilla, 5 like strawberry, 5 like mint, and 3 like other. Part 1: What is the probability that a scholar will like vanilla? Part 2: If there are 50 scholars at ATLAS, predict how many will like vanilla. (hint: draw an apartment complex)

Part 1: 4/25 Part 2: 8

300

Mr. Cady did a survey of Wisconsin's favorite Ice Cream Flavors. 8 like peppermint, 4 like vanilla, 5 like strawberry, 5 like mint, and 3 like other. What is the probability that a scholar will like strawberry or mint?

P (strawberry or mint)=10/25

400

Mr. Cady did a survey of Wisconsin's favorite Ice Cream Flavors. 8 like peppermint, 4 like vanilla, 5 like strawberry, 5 like mint, and like other. Part 1: What is the probability that a scholar will like strawberry or mint? Part 2: Predict how many scholars would like strawberry or mint if there were 100 scholars at Atlas. (hint: draw an apartment complex)

Part 1: 10/25 Part 2: 40

500

Mr. Cady did a survey of Wisconsin's favorite Ice Cream Flavors. 8 like peppermint, 4 like vanilla, 5 like strawberry, 5 like mint, and 3 like other. Part 1: What is the probability that a scholar would like vanilla, strawberry, or mint? Part 2: Predict how many scholars would like vanilla, ice cream, or mint if there were 200 scholars at ATLAS. (hint: draw an apartment complex)

Part A: 14/25 Part B: 112

Probability Words

100

You have a 6-sided dice. Is it likely, unlikely, certain, or impossible that you will roll a 7? Why?

It is impossible because there is not a 7 on the dice.

200

You have an 8-part spinner. What is the probability of spinning a 1, 2, 3, 4, 5, 6, 7, or 8? Is it likely, unlikely, certain, or impossible that you will roll a 1, 2, 3, 4, 5, 6, 7, or 8? Why?

P (1, 2, 3, 4, 5, 6, 7, 8) = 8/8 =1 It is certain because the probability is 1.

300

You roll a 6 sided dice 1 time. Part 1: What is the probability of rolling a 1? Part 2: Is it likely, unlikely, certain, or impossible that you will roll a 1? Why?

Part 1: P (1) = 1/6 Part 2: It is unlikely because the probability is 1/6, which is a very low probability.

400

You have a 6-sided dice. Part 1: What is the probability of rolling a 1, 3, 5, or 6? Part 2: Is it certain, unlikely, likely, or impossible that you will roll a 1, 3, 5, or 6?

P (1, 3, 5, 6)= 4/6 It is likely because 4/6 is a high probability.

500

You spin an 8 part spinner one time. Part 1: What is the probability of spinning a number LESS than 4? Part 2: Is it likely, unlikely, certain, or impossible that you will spin a number less than 4?

Part 1: P(number less than 4)= 3/8 Part 2: It is unlikely because 3/8 is a low probability.