OK so it's telling us to order it from least to greatest, WHICH MEEAANNS we start with the lowest possible number listed. ( I'm gonna turn the fractions into decimals just to make this easier. )
SO, we have:
-1.8 -- 1 -- 1.4 -- 1.9 -- -1.25
Ofc first we start with the negative numbers.
-1.8 and -1.25
( We're just gonna add an extra zero to 1.8 so we can see which is less )
SO, which is less -1.80 or -1.25
NOW REMEMBER negative numbers are different from positive, they get ranked in the opposite way. WHICH MEANS -1.80 is LESS than -1.25 BECAUSE -1.80 is farther from 0 than -1.25 is. Next is the positive numbers:
1 -- 1.4 -- 1.9
Now, this is the easy part. 1 is the least out of the positive numbers listed, then 1.4 then 1.9! Which makes the order:
-1.8 ---- -1.25 ---- 1 ---- 1 2/5 ---- 1 9/10