I am greater than 4 tens and less than 5 tens. Ihave 9 ones. what number am i?

Question

I have two more problems, this is a second grade hw. :

It is greater than 43  and less htan 52.  I you add the digits, the sum is 8.

It is less than 60 and greater than 55. I f you add the digits, the sum is13.

Answer 1

49 = 40 + 9 ones

44 = greater than 43 that means 40 +4= 8 the total of the digits

58 = number in 50's 50 + 8 =13 the total of teh digits