Question

How can you represent -5 *-4 with a model?
-5 + -5 + -5 + -5
5*4
4+4+4+4+4
- (-4 + -4 +-4 +- 4 -4)
which of these equations are right

Answer 1

The equation "-5 + -5 + -5 + -5" is the correct representation of -5 * -4 using a model.