Problems of the Week - February 1 to February 6

Rewards for Problems of the week:

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

 Lower Elementary:

Question: Alex has twice as much money as her brother. She spends $3 to buy some trading cards. If her brother has $16, how much money does Alex have after buying the trading cards?

 Upper Elementary:

Question: Anna, Brayden, and Caleb have three equally sized pies. Anna ate four fifths of her pie. Brayden ate eight ninths of his pie. Caleb ate nine tenths of his pie. Who has the most pie left over?

 Middle School:

Question: For the first six days of the week, Zelda posted three pictures per day on social media. How many does she need to post on the seventh day to have an average of four pictures posted per day for the whole week?

 Algebra and Up:

Question: A geography teacher has two globes in his classroom. The larger one has a volume of 972π cubic inches. If the ratio between their radii is 3:2, what is the radius of the smaller globe? You may use a calculator to solve this problem.

Challenge problem to take home. 20 points for the correct answer. 

Jaz makes circular necklaces by stringing black and gold beads together. She wants to count how many different necklaces she can create. Two necklaces are the same if we can rotate and/or flip one necklace to make it identical to the other.

How many different necklaces can she make from 6 black and gold beads? The necklaces can have any numbers of black and gold beads, as long as their total is 6.