450
4500
4500
45
45 and the nearest ten to 45.23 is 45.20
45 to the nearest tens place is 50.
45 is called 45 because most of us count in tens and it is a symbolic representation of 4 tens and 5 units. 45 is a number and has no physical existence. It therefore does not have any mm.
97
It rounds to 50
It is: 50
450 of them.
45
5,033
what is 3tens+18ones
4050