Number Line Math 3-6 app for iPhone and iPad

Part of the Math Practice Tools CFS Bundle

Designed for use in middle and upper elementary classrooms. Work with 2-digit addition and subtraction problems in six forms:
• JOIN with RESULT unknown
• JOIN with CHANGE unknown
• JOIN with START Unknown
• SEPARATE with RESULT unknown
• SEPARATE with CHANGE Unknown
• SEPARATE with START Unknown

Set the options to work with one form of problem at a time or mix in any combination.
Set the range of sums/minuends as 10-25; 26-50; 51-99.
Set an option to include negative numbers.