Integers   »      

... multiply -2- permanence principle

In the example on the right, two positive numbers were multiplied.

You can let the program show you step by step how to multiply a positive number by a negative one.
Click several times on  ? » 

If you have understood this, you can solve some problems.

Click on  check  to check your answer.
Click on  new  to create a new problem.
Can you top 295 points?