Directions: Using the numbers 1-9, each one time only, fill in the blanks to make true statements: = > Note: there are 8 blanks Source: Kate Nerdypoo

Directions: Using the digits 1 to 9 at most one time each, place a digit in each box to make the smallest possible decimal sum. Source: Kari Frazier

Directions: Using the digits 1 to 9 at most one time each, place a digit in each box to make a true statement. Try to find solutions where the fractions are in their lowest terms. Source: Charlotte Hawthorne

Directions: Using the digits 0 to 9 at most one time each, place a digit in each box to make a true fraction division sentence. Source: Shanelia Rhome-Shannon and Aiden (Student)

Directions: Using the digits 0 to 9 at most one time each and choosing either multiplication/division or addition/subtraction, place a digit in each box to make a true statement. Source: Brian Errey

Directions: Use only the digits 1-9, each digit only once, to create a problem that has the smallest possible positive answer. Source: Noel Chang

Directions: Using the digits 1 through 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 make a true statement. Source: Owen Kaplinsky

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

Directions: Using the digits 0 to 9 at most one time each, fill in the boxes to create a unit rate with the greatest possible value. Source: Robert Kaplinsky