4 Digit Addition without Regrouping – Question 1
Add the following:

Explanation
Adding the digits at ones place,
3 + 1 = 4

Adding the digits at tens place,
2 + 1 = 3

Adding the digits at hundreds place,
3 + 2 = 5

Adding the digits at thousands place,
5 + 3 = 8

Hence, the sum of the given numbers is 8534
4 Digit Addition without Regrouping – Question 2
Add the following:

Explanation
Adding the digits at ones place,
3 + 2 = 5

Adding the digits at tens place,
5 + 3 = 8

Adding the digits at hundreds place,
1 + 2 = 3

Adding the digits at thousands place,
1 + 7 = 8

Hence, the sum of the given numbers is 8385