Grade 8

Directions: Using the digits 1 to 9, at most one time each, fill in the boxes to create expressions that produce rational roots Source: Norma Gordon

Directions: Using the digits 1 to 9, at most one time each, fill in the boxes to make the largest (or smallest) absolute difference. Source: Marie Isaac

Directions: Using the digits 1 to 20, at most one time each, fill in the boxes to create equivalent expressions. Source: Shaun Errichiello

Directions: Using the digits 0 to 9, at most once each time, fill in blanks to create a set of 4 points that create either parallel or perpendicular lines, depending on how you connect them. ( ___, ___ ) ( ___, ___ ) ( ___, ___ ) ( ___, ___ ) Source: Bryan Anderson

Directions: Using the digits 1 to 30, at most one time each, fill in the boxes to create a system of two linear equations where (3, 2) is the solution to the system. Source: Daniel Luevanos

Directions: Using the digits 0 to 9, at most one time each, fill in the boxes 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 a true statement. Source: Daniel Luevanos

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