Addition and Subtraction: (2-100) by (2-100) Multiplication and Division: (2-100) by (2-12)

Addition and Subtraction: (2-50) by (2-50) Multiplication and Division: (2-50) by (2-5)

Addition and Subtraction: (2-10) by (2-10) Multiplication and Division: (2-10) by (2-10)

Addition and Subtraction: (20-1000) by (20-1000) Multiplication and Division: (20-100) by (6-20)