Answer:

Explanation:
First you have to see the decimal places.
Than the number of digits there is.
So this is how we make it from least to greatest!
Since there is 3 numbers after the decimals in almost all of them...
Than let’s make ‘0.40’ into 3 numbers after the decimal too.
I am sure you have heard that if you add a ‘0’ to a decimal nothing will change right?
So let’s make 0.40 into 3 numbers after the decimal just like the other numbers!
Okay so first let’s add a zero to ‘0.40’... which now this turns into ‘0.400’
Now it will be more easier to compare least to greatest!
0.400 is the least, than comes 0.430, & than would be 0.480, & finally the greatest would be 0.489
Therefore the answer is 0.40 < 0.430 < 0.480 < 0.489.