The Real Number System

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

Directions: Using the integers -9 to 9, at most one time each, place an integer in each box to make an equation where the product’s exponent has the greatest possible value. 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, place a digit in each box to make the equation true. Source: Kate Nerdypoo

Directions: Using the digits 1 to 9, at most one time each, place a digit in each box to make the inequality true. Source: Bryan Anderson

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

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

Directions: Using the digits 1 to 9, at most one time each, create a sequence that is in numerical order and cannot be simplified anymore. Source: Phillip Haislip-Hansberry

Directions: Using the digits 0 to 9, at most one time each, place a digit in each box to make both of these equations true. Source: Jonathan Newman

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