Look at the shaded products. All of the products are the same number. What is true about the pattern?
One of the factors is always 1. When you multiply a number by 1, the product is that number.
One of the factors is always 1. When you multiply a number by 1, the answer is always 1.
One of the factors is always 0. When you multiply a number by 0, the product is that number.
One of the factors is always 0. When you multiply a number by 0, the product is always 0.