**Lower Elementary:**

*Question: *A baby panda eats 50 stalks of bamboo a day. How many stalks of bamboo are needed to feed 2 baby pandas for a week?

*Answer: *700 stalks

*Solution: *First, find how many stalks of bamboo one baby panda will eat in a week. Count by 50, 7 times to get 350 stalks of bamboo. To get the amount for 2 baby pandas, double the amount for 1 baby panda. 350 doubled is 700 stalks of bamboo.

**Upper Elementary:**

*Question: *Nathan is making bags of trail mix. Each bag contains a mixture that is 1/2 nuts, 1/5 raisins, and the rest is candy. What part of the mixture is candy?

*Answer: *3/10

*Solution: *One part is equal to the whole minus the sum of the other parts. The sum of the other parts is 1/2 + 1/5. The Law of Sameness says we can only add things with the same name, so we will change the fractions so they have the same name.

1/2 = 5/10

1/5 = 2/10

Adding those we get 7/10. 1 – 7/10 = 3/10, so candy is 3/10 of the mixture.

**Middle School:**

*Question: *A guitar store is having a sale; everything is 20% off. Clay is going to buy a new guitar that is $300. After the 20% discount, Clay uses a coupon for an additional $25 off. After the sale and coupon, how much does the guitar cost?

*Answer: *$215

*Solution: *To find out how much money is saved from the sale, find 20% of $300. Percent means for each hundred, 20% of $300 is $60 ($20+$20+$20). $300 – $60 = $240. Subtract the $25 for the coupon to get the modified cost of the guitar. $240 – $25 = $215.

**Algebra and Up:**

*Question: *Six less than a positive number squared take away five times the same number is zero. What is the number?

*Answer: *6

*Solution: *Let n be the positive number. The statement as an equation would be:

n^{2} – 5n – 6 = 0

One way to solve this equation is to factor.

(n – 6)(n + 1) = 0

n – 6 = 0 n + 1 = 0

n = 6 n = -1

Since the question said that n was positive, the answer is 6.