Adding Zero
Subtracting by One
Multiply by Ten
Divide by Ten
Adding One
Subtracting by Two
Multiply by Five
Divide by Five
Adding Two
Subtracting Half of a Double
Multiply by One
Divide by One
Adding Doubles to 10
Subtracting with Zeros
Multiply by Two
Divide by Two
Adding Nine
Subtracting with Twos
Multiply by Three
Divide by Three
Adding Doubles to 20
Subtracting Doubles Plus One
Multiply by Four
Divide by Four
Adding Doubles Plus One
Subtracting from Ten
Multiply by Six
Divide by Six
Adding One / Doubles to 20
Subtracting by Nine
Multiply by Seven
Divide by Seven
Addition Odd Balls
Subtraction Odd Balls
Multiply by Eight
Divide by Eight
Mixed #1 (0-10) Add
Mixed #1 (0-10) Subtract
Multiply by Nine
Divide by Nine
Mixed #2 (0-10) Add
Mixed #2 (0-10) Subtract
Multiply with Doubles
Mixed #1 (0-10) Div
Mixed #3 (0-10) Add
Mixed #3 (0-10) Subtract
Mixed Mult #1 (0-10)
Mixed #2 (0-10) Div
Mixed Sub #1 (0-10), 100 facts
Mixed #2 Mult (0-10)
Mixed #3 (0-10) Div
Mixed Sub #2 (0-10), 100 facts
Mixed #3 Mult (0-10)
Mixed #1 (0-10), 100 facts Div
Mixed #1 (0-10), 100 facts Mult
Mixed #2 (0-10), 100 facts Div
Mixed #2 (0-10), 100 facts Mult