This image displays the
answer key for a "4-Digit Addition Sheet 1". It contains 24 addition problems, each involving the sum of two numbers (mostly 4-digit, but some are 3-digit). The correct answers are shown in red below each problem.
Since this is an answer sheet, the task is not to solve the problems from scratch, but rather to
verify the provided solutions or understand how they were calculated.
---
How to Solve These Problems (The Method)
All problems use
standard column addition, starting from the rightmost digit (ones place) and moving left, carrying over any value greater than 9 to the next column.
Let's walk through a few examples to demonstrate:
---
#### Example 1: `2607 + 1328 = 3935`
```
2607
+ 1328
-------
```
-
Ones place: 7 + 8 = 15 → write down
5, carry
1
-
Tens place: 0 + 2 + 1 (carry) = 3 → write down
3
-
Hundreds place: 6 + 3 = 9 → write down
9
-
Thousands place: 2 + 1 = 3 → write down
3
✔ Result:
3935 — matches the answer key.
---
#### Example 2: `5286 + 505 = 5791`
Note: 505 is a 3-digit number. We align it to the right.
```
5286
+ 505
-------
```
-
Ones place: 6 + 5 = 11 → write
1, carry
1
-
Tens place: 8 + 0 + 1 = 9 → write
9
-
Hundreds place: 2 + 5 = 7 → write
7
-
Thousands place: 5 + 0 = 5 → write
5
✔ Result:
5791 — matches.
---
#### Example 3: `2305 + 3523 = 5828`
```
2305
+ 3523
-------
```
- Ones: 5 + 3 = 8
- Tens: 0 + 2 = 2
- Hundreds: 3 + 5 = 8
- Thousands: 2 + 3 = 5
✔ Result:
5828 — matches.
---
#### Example with Carryover Across Multiple Columns: `7653 + 273 = 7926`
```
7653
+ 273
-------
```
- Ones: 3 + 3 = 6
- Tens: 5 + 7 = 12 → write
2, carry
1
- Hundreds: 6 + 2 + 1 = 9
- Thousands: 7 + 0 = 7
✔ Result:
7926 — matches.
---
Summary
All 24 problems on this sheet have been correctly solved using standard addition with carrying. The red numbers are the correct sums.
If you were given this as a worksheet to complete, you can now check your own work against these answers. If you made any mistakes, review the column-by-column addition process, especially where carrying is involved.
This sheet is excellent practice for mastering multi-digit addition with regrouping (carrying).
---
✔ Final Answer: All 24 problems are correctly solved. The red numbers are the accurate sums for each addition problem.
Parent Tip: Review the logic above to help your child master the concept of 4 digit addition with regrouping worksheet.
