The editor offers a brand-new addon — Writing Calculations which, as its name suggests, allows to create writing calculations, including multiplication, division, addition, or subtraction.
Now it is enough to enter an appropriate equation in the Value property in the module’s side menu, and you will have a ready to use calculation activity. The module can be of course styled in a broad variety of ways using CSS styles.
A complete documentation is available here. To view a short Demo presentation, click here.