Your friend thinks that 1.5 x 8 = 1.20 because you do not count the zero when placing the decimal point is your friend correct justify your reasoning

Your friend is incorrect.
You should always count 0's when deciding where to place the decimal point. To disprove your friend, you could divide 1.2 by 8 and see that it doesnt equal 1.5. Also, 8 is multiplied by a value that is more than one, so the result should be higher than 8.

Good luck with your assignment!