Answer and Step-by-step explanation:
The problem shown is 0.8 x 0.5.
Yes, if you multiply tenth by tenth you get hundredth. However, Don is wrong for saying Halen is wrong. This is because 0.8 x 0.5 = 8/10 x 5/10 = 40/100 = 0.40
But because the zero after 4 is insignificant, the zero goes and it is now 0.4.
