2*2=4

Correct. 2 × 2 = 4.

Brief reasons:

• Multiplication as repeated addition: 2 × 2 = 2 + 2 = 4.
• Area interpretation: a 2-by-2 square contains 4 unit squares.
• Set interpretation: Cartesian product of a 2-element set with itself has 4 ordered pairs.

If you want, I can give you some quick practice problems or go over related concepts (properties of multiplication, negative numbers, distributive law, etc.).