Drag and Drop Math is an interactive program that reinforces dozens of standards in addition, subtraction, multiplication and division found on the Common Core Standards. It allows users to pinpoint exactly what kind of math problems they need to work on and provides a drag and drop stage to allow students to organize numbers neatly in rows and columns. 
Users can:
 Define how many problems to work on
 Define how many number should be in each problem (e.g. adding two numbers of three numbers)
 Define how many digits should be in each number in each problem (e.g. add onedigit numbers by twodigit numbers)
 Draw Lines
 Use a handy calculator
 Change background screen from chart paper, to lined paper, to blank paper.
 Choose (for division) whether or not problems should have remainders.
 Get immediate feedback
 Fix problems that are incorrect
 Add their own problems

Reinforced Skills: 

Regrouping in Addition and Subtraction 
Adding Three Numbers 
Adding or Subtracting two, three or fourdigit numbers 
Multiplying two, three or four digit numbers 
Dividing two, three, or four different numbers 
Dividing two, three, or four digit numbers 
Dividing Numbers with Remainders 