The product of any number multiplied by 5 is either 5 or 0. (5, 10, 15, 20, 25, 30, etc.)
If you multiply any of these products by 2, what do you think will be the last digit?
Ian multiplied a whole number by 5. He then multiplied that product by 2. What digit is in the ones place of the final product?
3 answers
answer is "0"
50