Problems of the Week - March 7 to March 13

Rewards for Problems of the week:

5 stars for the correct answer at your level; 10 stars for the next level; 20 stars for 2+ levels up.

Lower Elementary:

Question: Did you know that goldfish memories last for 180 days and that they can recognize faces? If Mrs. Olson sends her 1st grade class’s goldfish to live with one of her students for the summer, will it recognize her 3 months later when the student brings it back to school?

Upper Elementary:

Question: Terry has a goldfish that is 3¼ inches long. Margot has a goldfish that is 3.3 inches long. Who has the bigger goldfish?

Middle School:

Question: An aquarium is 24 inches long, 12 inches wide, and 16 inches tall. What is the volume of the aquarium?

Algebra and Up:

Question: Sebastian wins a 0.5 inch long goldfish at a county fair. Every year, the goldfish’s length increases by 25%. The goldfish lives for 21 more years. Write an equation for the length of the fish x in terms of the number of years t that have passed since the county fair.

Challenge problem to take home. 5 stars for the correct answer. 

A fair die with 20 faces has each side labeled with a number from 1 through 10, with some labels appearing multiple times. If the probability that the die lands on the number 8 is 1/5, how many sides are labeled 8?