Greater numbers mean highest or the big numbers on the right of a number line. So negatives are way on the left of the number line so they always are less than positive numbers. 2.54 and 2 1/4 are the greatest two cause they aren’t negative. 2 1/4 is the same as 2.25 so which is bigger 2.25 or 2.54. The answer is 2.54 then 2.25. The negative numbers are weird the number closer to 0 is the greatest out of the negatives. -1.79 and -4 which one is closer to 0. It’s -1.79 then -4 so you’re final answer is 2.54, 2 1/4, -1.79, -4.