Directions: Using the digits 1 to 8 at most one time each, fill in the coordinates to create the vertices of a rectangle: A(__, __), B(__, __), C(__, __), D(__, __). Extension: What is the rectangle with the largest/smallest area/perimeter that you can find? Source: Erick Lee

Directions: There are _____ red marbles and _____ blue marbles in Bag A. There are _____ red marbles and _____ green marbles in Bag B. Using the digits 1 to 9 at most one time each, fill in the boxes to make the probability of drawing a red marble from either bag the same. Extension: Change the problem such that …

Directions: Select three of the spinners from the image below (you may pick more than one of each) such that the total number of sectors in all three spinners totals 10. Select spinners so that the probability of all three spinners landing in the shaded sector is the smallest (or largest). Extension: How would the answer change if you could …

Directions: Using the digits 0 to 9, at most one time each, fill in the boxes so that the fraction equals the repeating decimal. Source: Daniel Luevanos

Directions: What is the largest amount in coins you can have and not be able to make change for a dollar without shorting yourself or cheating the other person? Source: Glenn Waddell

Directions: You have $1.00 in change in your pocket. You have 15 coins. What coins do you have? Source: Andrew Gael

Directions: You have the same number of pennies, nickels, and dimes in your pocket. You have $1.44. You don’t have any other coins or bills. How many of each coin do you have? Source: Andrew Gael

Directions: Using the integers -5 to 5, at most one time each, write an expression that will have the greatest (or least) absolute value. Source: Michael Wiernicki

Directions: Using the digits 1 to 9 at most one time each, fill in the boxes to create the closest possible sum to 100. Source: Graham Fletcher

Directions: Using the digits 1 to 9 at most one time each, fill in the boxes to create 3 equivalent fractions. Source: Graham Fletcher, Bowen Kerins