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# The Number System

## Square Root Expression

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

## Rational and Irrational Roots 7

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

## Rational and Irrational Roots 6

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

## Rational and Irrational Roots 5

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

## Rational and Irrational Roots 4

Directions: Directions: Using the digits 2 – 9, find a unique pair that when used to fill in the boxes, create expressions that produce two rational roots and two irrational roots. Source: Norma Gordon

## Rational and Irrational Roots 3

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

## Rational and Irrational Roots 2

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

## Rational Roots

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