Grade 8

Directions: Using the digits 0 to 9, at most one time each, place a digit in each box to make a result that is as close to zero as possible. Source: Daniel Luevanos

Directions: Using the digits 0 to 9, at most one time each, place a digit in each box to make the equation true. Source: Daniel Luevanos

Directions: Using the digits 0 to 9, at most one time each, place a digit in each box to make the sum of the interior angles of a triangle. Source: Ashley Henderson

Directions: Using the digits 1 to 9, at most one time each, place a digit in each box to write the equation of a line that passes through the point with the largest possible y-intercept. How many solutions can you find?   Source: Andy Schwen

Directions: Using the digits 0 to 9, at most one time each, place a digit in each box to find the lengths of the missing sides such that the missing leg’s length is as long as possible. Source: Robert Kaplinsky

Directions: Using the digits 0 to 9, at most one time each, place a digit in each box to find two pairs of possible lengths for the missing sides. Source: Robert Kaplinsky

Directions: Using the digits 1 to 9, at most two times each, place a digit in each box to make an equation with no solutions. Source: Robert Kaplinsky

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

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

Directions: Using the digits 1 to 9, at most one time each, create an equation where x has the smallest (or greatest) possible value. Source: Daniel Luevanos