See the complete list of activities at the bottom of the page.

problem solving [broken calculator] [3] [4] [add divide multiply subtract]

solving a broken calculator [3] [4] [add divide multiply subtract]
























[News Flash]
Use the keys on this broken calculator to make the totals from 1 to 20. Try to use the least number of instructions. Record your answers in the table on the right hand side. To restart the activity just refresh the page.