Expressions & Equations

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

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

Directions: Using the digits 1 to 9, at most one time each, place a digit in each box so that there are infinitely many solutions. Source: Jordan Dodge

Directions: Using the digits 0 to 9, at most one time each, place a digit in each box to find three points on the same line and the slope. Source: Maggie Lee McHugh

Directions: Using the digits 0 to 9, at most one time each, place a digit in each box to create a true equation. Source: Jos Bertemes

Directions: Using the digits 1 to 9, at most one time each, place a digit in each box to create the largest (or smallest) sum possible. Source: Annie DeAngelo

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: Using the digits 1 to 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 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 integers -9 to 9, at most one time each, place an integer in each box to create a system of equations with a solution in Quadrant 2. Source: Robert Kaplinsky