Problems of the Week - October 26 to October 31

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: Tori has reading homework that is 19 pages long. The homework is printed front-and-back on sheets of paper. How many sheets of paper are needed for the whole reading assignment?

Upper Elementary:

Question: Sebastian completed 4 math assignments, 5 writing assignments, 7 reading assignments, 3 history assignments, and 1 science assignment last week. Fill in the pie chart with Sebastian’s homework assignments.

Middle School:

Question: Lisa needs to memorize the locations of all 54 countries in Africa for a geography test that will be 30 days from now. She memorizes 7 countries every 3 days. Every 2 days, she forgets a country and needs to re-memorize it. Will she have enough time to memorize all of the countries in Africa for her geography test?

Algebra and Up:

Question: Logan has answered 0.8 times as many math questions as Spanish questions, and he’s answered 5 more English questions than Spanish questions. If Logan has answered 33 questions in total, how many math questions has Logan answered?

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

Nora is playing a game in which she tries to guess whether an unknown binary number – which is five-digits at most - will be even or odd.

After making her guess, she will press a button. Then two of the five zeroes will randomly become ones, revealing the unknown number.

Should Nora guess even or odd?