The Number System

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 to 9, find one pair of digits to fill in the boxes to create expressions that produce one rational root and three irrational roots. Source: Norma Gordon

Directions: Using the digits 1 to 9, find one pair of digits to fill in the boxes to create expressions that produce two rational roots and two irrational roots. Source: Norma Gordon

Directions: Using the digits 1 to 9, find one pair of digits to fill in the boxes to create expressions that produce one rational root and three irrational roots. Source: Norma Gordon

Directions: Using the digits 2 to 9, find one pair of digits to fill in the boxes to create expressions that produce two rational roots and two irrational roots. Source: Norma Gordon

Directions: Using the digits 2 to 9, fill in the boxes with a unique pair that create expressions that produce one rational root and three irrational roost. Source: Norma Gordon

Directions: Using the digits 2 to 9, fill in the boxes with a unique pair that create expressions that produce three rational roots and one irrational root. Source: Norma Gordon

Directions: Using the digits 1 to 9, at most one time each, fill in the boxes to create expressions that produce rational roots Source: Norma Gordon

Directions: Using digits 0 to 9, at most one time each, fill in the boxes to create the following number types. Source: Shaun Errichiello

Directions: Using the digits 0 to 9 at most one time each, fill in the boxes to create the following number types: Source: Bryan Anderson