Question

Logan ate1.438 pounds of grapes his brother Ralph are 1.44 pounds of grapes which brother are more grapes

Answer 1

Ralph would have eaten more grapes. The way that you compare decimals is you make sure that they all go out to the same place value. So what we would do is: 1.438 (stays the same)
1.440 (you add a zero to the end) so,

1.440
- 1.438
========
0.2

Answer 2

Ralph ate more grapes