Answer:
Helen is correct and Don is wrong
Explanation:
Halen wrote the prodect 0.4 for the problem .5×.8. Don says that is not correct since when you multiply tenths by tenths the product will be in the hundreths. Is Don right?
.5 × .8 = 0.4
Helen is correct
Don is wrong because the zero(0) at the end of decimals are usually ignored
Such as: 0.10 ; it is usually written as 0.1
Same thing goes for 0.40 which is written as 0.4
Therefore, Helen is correct and Don is wrong