Find the sum of the following:

$8 + 5 = 13$. Write down 3 in the Ones place and carry over 1 to the Tens place.

$2 + 2 + 1$ (carry-over) $= 5$. Write down 5 in the Tens place.
The sum is $\boxed{\text{53}}$.

b)

$7 + 4 = 11$. Write down 1 in the Ones place and carry over 1 to the Tens place.

$3 + 2 + 1$ (carry-over) $= 6$. Write down 6 in the Tens place.
The sum is $\boxed{\text{61}}$.

c)

$7 + 6 = 13$. Write down 3 in the Ones place and carry over 1 to the Tens place.

$4 + 3 + 1$ (carry-over) $= 8$. Write down 8 in the Tens place.
The sum is $\boxed{\text{83}}$.

d)

$2 + 9 = 11$. Write down 1 in the Ones place and carry over 1 to the Tens place.

$3 + 4 + 1$ (carry-over) $= 8$. Write down 8 in the Tens place.
The sum is $\boxed{\text{81}}$.

e)

$9 + 6 = 15$. Write down 5 in the Ones place and carry over 1 to the Tens place.

$3 + 3 + 1$ (carry-over) $= 7$. Write down 7 in the Tens place.
The sum is $\boxed{\text{75}}$.

f)

$8 + 5 = 13$. Write down 3 in the Ones place and carry over 1 to the Tens place.

$3 + 2 + 1$ (carry-over) $= 6$. Write down 6 in the Tens place.
The sum is $\boxed{\text{63}}$.

g)

$7 + 5 = 12$. Write down 2 in the Ones place and carry over 1 to the Tens place.

$5 + 3 + 1$ (carry-over) $= 9$. Write down 9 in the Tens place.
The sum is $\boxed{\text{92}}$.

h)

$7 + 6 = 13$. Write down 3 in the Ones place and carry over 1 to the Tens place.

$4 + 2 + 1$ (carry-over) $= 7$. Write down 7 in the Tens place.
The sum is $\boxed{\text{73}}$.

2. Arrange in columns and find the sum:

a) $34 + 48$

$4 + 8 = 12$. Write 2, carry 1.

$3 + 4 + 1 = 8$.
The sum is $\boxed{\text{82}}$.

b) $24 + 67$

$4 + 7 = 11$. Write 1, carry 1.

$2 + 6 + 1 = 9$.
The sum is $\boxed{\text{91}}$.

c) $57 + 26$

$7 + 6 = 13$. Write 3, carry 1.

$5 + 2 + 1 = 8$.
The sum is $\boxed{\text{83}}$.

d) $95 + 48$

$5 + 8 = 13$. Write 3, carry 1.

$9 + 4 + 1 = 14$.
The sum is $\boxed{\text{143}}$.