Step-by-step explanation: If you divide 7 by 4 you get 1.75. Then you divide 5 by 4 and you get 1.25. 1.75 is greater than 1.25. Also, if they have the same denominator, whichever has a higher numerator would be greater.
First off, 7/4 has more 4ths than 5/4 so that is greater, but second, you can convert the numbers into decimals, I can't remember how but by doing that you can have an easier way to compare them.
If the first roll is a three, then the only chance of the sum of the two numbers being less than six is if you roll a 1 or a 2. That is 2/6 chance, or simplified, a 1/3 chance.
