# Problems of the Week

Feb 17, 2020 | High Park

Mathletes! You don't have to be a brain sturgeon to solve these fishy problems. They're a great oppor-tuna-ty to stretch your mind. Can you solve all 4?

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.

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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?
Solution: A month is about 30 days. So, 3 months is about 30 + 30 + 30 = 90 days. Since 90 days is less than 180 days, the goldfish will still recognize Mrs. Olson.

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?