Grade 8

Directions: Using the digits 0 to 9 at most one time each, place a digit in each box to create a result with the greatest exponent. Source: Kjersti Oliver

Directions: In triangle ABC, angle ABC is obtuse. Using the digits 1 to 9 at most one time each, place a digit in each box to make angle ACB the smallest possible acute angle. Source: Jay Sydow

Directions: Using the digits 1 through 9 at most one time each, place a digit in each box to create an equation such that the solution is the largest integer possible. Source: Kristen Amaral

Directions: Using the digits 0 to 9 at most one time each, place a digit in each box to give this cylinder the maximum volume possible. Source: Kyle Leinweber

Directions: Using the digits 1 to 9 at most one time each, place a digit in each box to create a a system of equations with infinitely many solutions. Source: Mike

Directions: Using the digits 1 to 9 at most one time each, place a digit in each box to create 3 rational and 2 irrational numbers. Source: Jennifer Kolis

Directions: Using the integers -9 to 9 at most one time each, fill in the boxes to create a system of equations with a solution in Quadrant 2. Source: Robert Kaplinsky

Directions: Using the integers -9 to 9 at most one time each, fill in the boxes to create a system of equations with a solution in that’s as close to the origin as possible. Source: Robert Kaplinsky

Directions: Using the integers -9 to 9 at most one time each, fill in the boxes to create the strongest possible linear association. Source: Robert Kaplinsky

Directions: Using the integers -9 to 9 at most one time each, fill in the boxes to create two sets of six points: one that has a positive association and one that has a negative association. You may reuse all the integers for each equation. Source: Robert Kaplinsky