Let’s solve each addition problem one by one. We’ll add the numbers in each column, starting from the right (ones place), then move to the left (tens place). If the sum in any column is 10 or more, we carry over to the next column — but in these problems, most don’t require carrying, and when they do, we’ll handle it carefully.
---
**Problem 1:
24
+13
----**
Ones: 4 + 3 = 7
Tens: 2 + 1 = 3
→ Answer:
37
---
**Problem 2:
37
+11
----**
Ones: 7 + 1 = 8
Tens: 3 + 1 = 4
→ Answer:
48
---
**Problem 3:
28
+14
----**
Ones: 8 + 4 = 12 → write down 2, carry over 1
Tens: 2 + 1 = 3, plus carried 1 = 4
→ Answer:
42
---
**Problem 4:
40
+26
----**
Ones: 0 + 6 = 6
Tens: 4 + 2 = 6
→ Answer:
66
---
**Problem 5:
35
+28
----**
Ones: 5 + 8 = 13 → write down 3, carry over 1
Tens: 3 + 2 = 5, plus carried 1 = 6
→ Answer:
63
---
**Problem 6:
16
+13
----**
Ones: 6 + 3 = 9
Tens: 1 + 1 = 2
→ Answer:
29
---
**Problem 7:
14
+25
----**
Ones: 4 + 5 = 9
Tens: 1 + 2 = 3
→ Answer:
39
---
**Problem 8:
13
+22
----**
Ones: 3 + 2 = 5
Tens: 1 + 2 = 3
→ Answer:
35
---
**Problem 9:
44
+25
----**
Ones: 4 + 5 = 9
Tens: 4 + 2 = 6
→ Answer:
69
---
**Problem 10:
19
+13
----**
Ones: 9 + 3 = 12 → write down 2, carry over 1
Tens: 1 + 1 = 2, plus carried 1 = 3
→ Answer:
32
---
**Problem 11:
40
+23
----**
Ones: 0 + 3 = 3
Tens: 4 + 2 = 6
→ Answer:
63
---
**Problem 12:
29
+31
----**
Ones: 9 + 1 = 10 → write down 0, carry over 1
Tens: 2 + 3 = 5, plus carried 1 = 6
→ Answer:
60
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Final Answer:
37, 48, 42, 66, 63, 29, 39, 35, 69, 32, 63, 60
Parent Tip: Review the logic above to help your child master the concept of addition activity worksheet for grade.
