Problems of the Week - October 4 to October 10

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: Start with 10. Double it. Subtract 8. Double the number again. Subtract 14. Take away half. What is the new number?

Upper Elementary: 

Question: Twenty-three kids split into teams to go on a scavenger hunt. How many kids are on each team if the kids split up into exactly 7 teams as evenly as possible?

Middle School: 

Question: Write a set of parentheses around two numbers in the equation below to make it true.

5   +   3   ×   4   ²   ÷   12   –   7   =   10

Algebra and Up: 

Question: After a 15% discount and 6% sales tax, a book costs $27.03. What is the book’s sticker price?

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

A diagonal and two additional lines have been drawn in a square:

What is x + y?