Math without words Resize


Instructions

  1. Move the green points to change the values of \(a\), \(b\), \(c\) and \(d\).
  2. Move the point marked in the following picture to select the intended operation (addition, subtraction, multiplication or division).
  3. Observe the diagram for different values of \(a\), \(b\), \(c\) and \(d\).
  4. The app displays a tip that helps find the value of the operatation. To see it, move from left to right the corresponding point.

    The tip shows the value of the operation in a scheme at the right side of the app.
  5. Find out the value of the operation.
  6. To check your solution, move from left to right the corresponding point.