Oh, this is really simple m8
Alright, for 22: It doesn't matter how many 0's you add after the main digits (there's an official term for these digits, but I don't exactly recall it at this moment)
BASICALLY, 0's are just being used as placeholders AFTER the main digits, which in this case is 2.6
So, you can say 2.6, 2.60, 2.600, 2.6000, 2.60000000, but those 0's are meaningless really, because they all REALLY have the same value, 2.6. Your choice that they want is 2.06. You can't toss a 0 between the main digits without changing the value.
So, 22=2.06
Using the same methods as I said, notice how the main digits in 23 are 4.07. This is unchanging. Anything that gets tossed in between changes the numbers value. The answer they want is 4.70.
Using the same methods as above, notice how the main digits in 24 are 65.8. The answer they want, the choice that's different, is 65.08
Same thing for 25. The main digits are 37.06, so the choice they are looking for, the only one with a different value, is 37.6
For 26, three decimals that are equivalent:
For example: .5, .50, .500 are all equal.
For 27, rewrite these as fractions. That's easy.
In algebra, there are names for anything after the decimal. The first number that comes after the decimal is known as the "tenth", the second is known as the "hundredth", the third is known as the "thousandth", so on.
Applying that, we can convert these into fractions, using each decimals respective value as the denominator here.
.5 is in the tenth place, so as a fraction it's 5/10
.50 is in the hundredth place total, so as a fraction it's 50/100
.500 is in the thousandths place total (meaning this is where it ends), so it's 500/1000 as a fraction.
But in the end, ALL of these are the same value, 5/10
~Hope this helps!
