Question

Which is greater 74.3 or 7.43

Answer 1

74.3 is greater because it is 10 times greater than 7.43.

Answer 2

Perhaps the question will be less confusing if you temporarily ignore the decimal parts, and just compare the whole-number parts.

Look at  74 , and then look at  7 .
Look at them again, and a few more times if necessary.
You'll see that  74  is waaay bigger than  7 .

That's true even when you stick the decimal parts back on.
The decimal parts can't change it ... a decimal part can't
add more than ' 1 ' to a whole number.

So 74 (plus any decimal) is still waaay bigger than 7 (plus any decimal).