**TEST #5: 21-Feb-2018**

Here are the questions and answers from the third test. As you take this, if you would like to help support what we are doing, we would welcome any donation that will go to support this program and get 4th and 5th graders even more excited with math. Every $10 donation buys a calculator for 9 math geniuses.

**QUESTIONS:**

1. VEGAS BABY!!! I want to lose money so I play roulette. There is a 5% chance I win $4 and a 35% chance I win $1. Otherwise I lose $1. If I played 1000 games, what would I expect to win or lose?

2. I = $20,000 + E x $2,000 + S x $12,000 is an equation that estimates your income. I is income, E is total years of education, and S is years of STEM classes taken in college. What would you expect to make with 17 years of education and 4 years of college STEM classes?

3. I can normally run at 7 mph. However if I listen to heavy metal, I can run 25% faster. How far can I run if I play Welcome to the Jungle (song is 5 minutes long)? (answer should be at least two decimals)

4. I have $10,000 and I want it to triple in 15 years. What interest rate would I need? (answer should be at least one decimal)

5. Adam and Peter both have $10,000 for college. They both invest that money for 20 years. If Adam invests it at 8% and Peter invests it at 9%, how much more will Peter have after 20 years?

6. There are six runners in a race (Amy, Bo, Cindy, Dave, Elle, and Fred). If all you care about are the first three finishers, how many different combinations of 1st, 2nd, and 3rd place are there?

**ANSWERS:**

1. Lose $50 (11% of students got this correct)

2. $102,000 (56%)

3. 0.73 miles (17%)

4. 7.6% (19%)

5. $9,435 (39%)

6. 120 (17%)

**TEST #4: 25-Jan-2018**

**QUESTIONS**

**Q1: **BAD DECISIONS. How much would you spend on cigarettes during your lifetime if you started smoking at 18, smoked 2 packs a day until you’re 70, and each pack costs $5.25.

**Q2: **If you have $100 and you earn 2% interest annually, how much will you have after 5 years?

**Q3:**** ** My electric bill is calculated with the formula: B = 15 + 0.1 E, where B is the amount of the bill, and E is the electricity I used. What is my bill if I used 1200 kilowatthours (E = 1200)?

**Q4: **How many left-handed girls with dark hair live in the US? There are 330 million people in US, 51% of Americans are girls, 9% of Americans are left handed, and 68% of Americans have dark hair.

**Q5: **The large square as a side of 12 inches. The smaller square has a side of 2 inches. How many smaller squares could fit in the larger square?

**Q6: **I can invest money and get an 9% return annually. How much do I need to start with if after 8 years I want $6,000?

**ANSWERS**

**Q1:** $199,290

**Q2: **$110.41

**Q3:** $135

**Q4: **10,299,960

**Q5:**** ** 36

**Q6: **$3,011.20

Our next test will be on February 21, 2018, at Summerfield Elementary School at 3:15pm. Please register here.

**TEST #3: 13-Dec-2017**

Here are the questions and answers from the third test. As you take this, if you would like to help support what we are doing, we would welcome any donation that will go to support this program and get 4th and 5th graders even more excited with math.

**QUESTIONS**

**Q1:** The average annual salary for someone with a math degree is $63,000 while it’s $36,000 for someone without a math degree. How much more will someone with a math degree make over 40 years?

**Q2:** The formula F = 1.8C + 32 converts Celcius to Fahrenheit. If water boils at 100C what is it in Fahrenheit?

**Q3:** I paid for a PS4 ($400) and virtual reality set ($360) with my credit card which charges 20% interest. If I don’t make a payment, how much will I owe in 10 years?

**Q4: **VIVA LAS VEGAS!!! You have a 48% chance of winning at Blackjack. If you bet $1 each time (if you win you win $1, if you lose you lose $1), how much would you expect to win or lose after 100 games?

**Q5:** Over 2 years my investment grew from $200,000 to $250,000. What is the compounded annual return on that?

**Q6:** A cancer drug kills 30% of the cancer cells (70% survive) each month. What percentage of cancer cells would still survive after a year of treatment?

**ANSWERS**

**Q1:** $1,080,000

**Q2: **212F

**Q3:** $4,706

**Q4: **Lose $4

**Q5:**** ** 11.8%

**Q6: **1.38%

Our next test will be on January 17, 2018, at Summerfield Elementary School at 3:15pm. Please register here.

**TEST #2: 15-Nov-2017**

Here are the questions and answers from the seconds test. As you take this, if you would like to help support what we are doing, we would welcome any donation that will go to support this program and get 4th and 5th graders even more excited with math.

**QUESTIONS**

**Q1:** A McDonald’s extra value meal has 1180 calories. If you run hard, you can burn 700 calories per hour. How many hours of running would it take to burn off that meal?

**Q2:** A graphing calculator costs $80. You already have $22 saved, and your weekly allowance is $4. How long until you have enough to buy it?

**Q3:** What is the probability of flipping a coin 4 times in a row and each flip coming up tails?

**Q4:** If you invested $100 and earned 6% interest annually, how much would you have after 10 years?

**Q5:** How many different ways can you arrange the letters of the word M-A-T-H?

**Q6:** A bacteria colony can triple in size (increase 200%) in 4 days. If it is currently is 1 gram, how big will it be in 20 days?

**ANSWERS**

**Q1:** 1.68 hours

**Q2: **14.5 weeks** **

**Q3:** 6.3%

**Q4: **$179.08

**Q5:**** ** 24

**Q6:** 243 grams

Our next test will be on December 13, 2017, at Summerfield Elementary School at 3:15pm. Please register here.

**TEST #1: 25-Oct-2017**

Here are the questions and answers from the first test. As you take this, if you would like to help support what we are doing, we would welcome any donation that will go to support this program and get 4th and 5th graders even more excited with math.

**QUESTIONS**

**Q1:** Solve for A (all answers). A^2 – 8 = 17

**Q2:** What is the probability of rolling 2 dice, and getting a 5 or higher on both rolls?

**Q3:** If you invested $500 of prize money and earned 8% interest annually, how much would you have after 7 years?

**Q4:** A soda has 250 calories. Your body converts 3500 calories into a pound of fat. If you drank a soda everyday for a year, how much extra fat would you have?

**Q5:** What is the area of the shaded portion?

**Q6:** The ratio of sunny days to cloudy days is 3:2. How many sunny days are there in a year?

**ANSWERS**

**Q1:** 5 AND -5

**Q2:** 1/9 OR 11%

**Q3:** $857

**Q4: **26.07 pounds

**Q5:**** ** 21.46

**Q6:** 219 days