Directions: What numbers go in the blanks to make the equation true? Source: Robert Kaplinsky

Directions: Using the digits 1 to 9, at most one time each, place a digit in each box to make the smallest (or largest) product. Source: Robert Kaplinsky

Directions: What is the greatest area you can make with a rectangle that has a perimeter of 24 units? Source: Robert Kaplinsky

Directions: What is the greatest perimeter you can make with a rectangle that has an area of 24 square units? Source: Robert Kaplinsky

Directions: Using the digits 1 to 9, at most one time each, place a digit in each box to make as many ratios as you can that are equivalent to 2:3. Source: Robert Kaplinsky

Directions: Using the digits 1 to 9, as many times as you want, place a digit in each box to make the biggest circle possible. Source: Robert Kaplinsky

Directions: Which circle is bigger?  Circle A with an area of 25 square units or Circle B with the equation x^2 + y^2 = 25 Source: Robert Kaplinsky

Directions: Which quadrilateral has a greater area? Quadrilateral A has its perimeter equal to 44 units.  Quadrilateral B has the sum of its interior angles equal to 360 degrees. Source: Robert Kaplinsky

Directions: Which rectangle is more like a square?  Rectangle A is 13 units by 15 units.  Rectangle B is 2 units by 3 units. Source: Robert Kaplinsky

Directions: How can you tell which square is bigger: a square with a perimeter of 25 units or a square with an area of 25 square units? Source: Robert Kaplinsky