Directions: Using the digits 1 to 7 at most one time each, place a digit in each box to create an inequality that match the solution of the inequality on the number line. Source: Jay Sydow

Directions: Using the digits 1 to 9 at most one time each, place a digit in each box to create two equations: one where x has a positive value and one where x has a negative value. You may reuse all the digits for each equation. Source: Robert Kaplinsky in Open Middle Math

Directions: Using the digits 1 to 9, at most one time each, fill in the boxes to find the largest (or smallest) possible values for the sum of x and y. Source: Erick Lee

Directions: Using the digits 1 to 9 at most one time each, fill in the boxes to find the largest (or smallest) possible values for x. Source: Chase Orton and Mark Goldstein

Directions: Using the digits 1 to 9 at most one time each, place a digit in each box to find the greatest (or least) possible values for x. Source: Audrey Mendivil, Daniel Luevanos, and Robert Kaplinsky

Directions: Using the digits 0 to 9 at most one time each, place a digit in each box to create an inequality with a solution of x<4 Source: Annie DeAngelo

Directions: Using the digits 1 to 9 at most one time each, fill in the boxes so x = y. Source: Arnav Gulati and Daniel Luevanos

Directions: Use the digits 1 to 9, at most one time each, to create an equation where x has the greatest possible value. Source: Robert Kaplinsky

Directions: Use the digits 1 to 9, at most one time each, to create two equations: one where x has a positive value and one where x has a negative value. Source: Robert Kaplinsky

Directions: Using the digits 0 to 9 at most one time each, place a digit in each box to create a true statement. Source: Stephen Caviness