Addition:
 (0-5)
 (0-10)
 (0-20)
 (0-100 in line)
 (0-100)
 (0-1000 in line)
 (0-1000)
 (800-10000)
 Fractions

 Subtraction:
 (0-5)
 (0-10)
 (0-20)
 (0-100 in line)
 (0-100)
 (800-10000)
 Fractions

 Multiplication:
 (0-10)
 (0-20)
 (10-100)
 (90-1000)
 Fractions
 2  3  4  5  6  7  8  9  10   2-3-4   3-4-5  2-3-4-5  4-5-6-7  6-7-8-9

 Division:
 (0-20 whole numbers) XX : Y
 (0-20) XX : Y
 (0-100 whole numbers) XX : Y or YY
 (0-100) XX : Y
 (0-1000 whole numbers) XXX : Y
 (0-1000) XXX : Y
 (0-1000 whole numbers) XXX : YY
 (0-1000) XXX : YY
 (0-10000 whole numbers) XXXX : Y
 (0-10000) XXXX : Y
 (0-10000 whole numbers) XXXX : YY
 (0-10000) XXXX : YY

 Mixture:
 Addition (0-10), subtraction (0-20), subtraction (0-10),

 Equations:
 (0-10) addition/subtraction
 (0-20) addition/subtraction
 (0-50) addition/subtraction
 (0-100) addition/subtraction
 (0-1000) addition/subtraction

 (0-10) addition/subtraction (also negative numbers)
 (0-20) addition/subtraction (also negative numbers)
 (0-50) addition/subtraction (also negative numbers)
 (0-100) addition/subtraction (also negative numbers)
 (0-1000) addition/subtraction (also negative numbers)

 (0-10) multiplication/division
 (0-20) multiplication/division
 (0-50) multiplication/division
 (0-100) multiplication/division
 (0-1000) multiplication/division

 (0-10) XY - addition/subtraction
 (0-20) XY - addition/subtraction
 (0-50) XY - addition/subtraction
 (0-100) XY - addition/subtraction
 (0-1000) XY - addition/subtraction

 (0-10) XYZ - addition/subtraction
 (0-20) XYZ - addition/subtraction
 (0-50) XYZ - addition/subtraction
 (0-100) XYZ - addition/subtraction
 (0-1000) XYZ - addition/subtraction