Question

Ripley told his mom that multiplying whole numbers by multiples of 10 was easy because you just count zeros in the factors and put them in the product. He used these two examples to explain this strategy 7,000 times 600 equals 4,200,000 and 800 times 700 equals 560,000 Ripley's mom said his strategy will not always work. Why not? Give an example.

Answer 1

Trash
Dododo
But

Answer 2

sometimes there are no zeros in what you are multiplying by or what is being multiplied so it won't always work