Is 5.19 greater than 5.2

Answer 1

No.

5.1 is 5 and "1 tenth and a bit less than 1 tenth", but 5.2 is 5 and "2 tenths".

"2 tenths" is greater than "1 tenth and a bit less than 1 tenth".

Thus 5.19 < 5.2

Alternatively, with 5.2 there are no hundredths, so you can put a zero in the (empty) hundredths column and not change its value:

5.2 = 5.20

Now it is easy to see 5.19 has 19 hundredths and 5.2 = 5.20 has 20 hundredths and 19 < 20, so 5.19 < 5.20 = 5.2