Directions: Use the digits 1 to 9, at most one time each, to fill in the boxes to create a true derivative statement. Source: Melissa Flynn

Directions: Use the digits 1 to 9, at most one time each, to fill in the boxes so that the line is tangent to the parabola. Source: Erin Stenger

Directions: Use the digits 1-9, at most one time each, to fill the blanks. Source: Catriona Shearer

Directions: Use the digits 1-9, at most one time each, to create a true statement. Source: Andrew Stadel

Directions: Using the digits 1 to 9, at most one time each, fill in the boxes to make the following expression as close to 0 as possible. Source: Erick Lee

Directions: Using the digits 1-9 at most one time each, fill in the blanks so that when you solve for x, it is a whole number. Source: Franco D. Adkins

Directions: Using the digits 1- 9, at most one time each, to fill in the boxes to make each expression evaluate to a perfect square number. Extension/Challenge: What is the largest/smallest square number you can make? How many different perfect square numbers could be made? Source: Erick Lee

Directions: Using the digits 1 to 9, at most one time each, fill in the boxes to make a true statement. Source: Ryun Deckert and Brock Montgomery

Directions: Using the integers -3 to 3, at most one time each, fill in the blanks to make each equation true. Source: Jeanmarie Mullen

Directions: Using the digits 1 to 6, at most one time each, fill in the boxes so that top two equations are equal and the bottom equation has a greatest value than the other two. Source: Kate Nerdypoo