Tag Archives: Robert Kaplinsky

Directions: Use the integers -9 to 9 at most one time each, place an integer in each box to make a positive real number product and then repeat the process to make a negative real number product. You may use all the integers each time. Source: Robert Kaplinsky

Directions: Using the digits 1 to 9 at most one time each, place a digit in each box to make a true equation where x has the greatest possible value. Source: Robert Kaplinsky

Directions: Using the digits 1 to 9 at most one time each, fill in the boxes to make each equation true. Source: Robert Kaplinsky

Directions: Using the integers -4 to 4, at most one time each, create an inequality with solutions of x > 2/3. Source: Robert Kaplinsky

Directions: What’s the solution that has the least / greatest value to the inequality 4x > 12? Source: Robert Kaplinsky

Directions: Create two inequalities that have the same number of solutions. Source: Robert Kaplinsky

Directions: Using the digits 1 to 9 exactly one time each, place a digit in each box to make the sum as close to 1000 as possible. Source: John Ulbright and Robert Kaplinsky

Directions: Using the digits 1 to 9 at most one time each, fill in the boxes so that the product is as close to 50 as possible. Source: Robert Kaplinsky

Directions: Using the digits 1 to 9 at most one time each, fill in the boxes to make a true statement. Source: Robert Kaplinsky with help verifying the answer from Marcia and Rick Casterline

Directions: How many ways can you determine the location of the line of reflection for isosceles triangle XYZ that maps Point X to Point Z? Source: Irvine Math Project, Nanette Johnson, and Robert Kaplinsky.