Integers   »      

... multiply -3a- 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 two negative numbers.
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?