Question

Write a rule that tell how to use mental math to find the product 30,000 x 50,000​

Answer 1

1,500,000,000

Explanation:

First multipy the first digits, which are the ones that do not contain zero.

then put all of the zeros at the end, so product will be 1,500,000,000 because their are 8 zeros in total

if you check with calculator, you get 1,500,000,000