You're working on a worksheet titled
“Add and Subtract 4-Digit and 2-Digit Numbers without Regrouping”. This means you’ll add or subtract digit by digit — starting from the right (ones place) — and
no borrowing or carrying over is needed because each digit in the top number is large enough to handle the operation with the bottom digit.
Let’s solve each problem one by one, explaining the steps.
---
🔢 Problem 1: 5615 + 62
Align the numbers by place value:
```
5615
+ 62
------
```
- Ones: 5 + 2 =
7
- Tens: 1 + 6 =
7
- Hundreds: 6 + 0 =
6
- Thousands: 5 + 0 =
5
✔ Answer:
5677
---
🔢 Problem 2: 3102 + 95
```
3102
+ 95
------
```
- Ones: 2 + 5 =
7
- Tens: 0 + 9 =
9
- Hundreds: 1 + 0 =
1
- Thousands: 3 + 0 =
3
✔ Answer:
3197
---
🔢 Problem 3: 5616 + 41
```
5616
+ 41
------
```
- Ones: 6 + 1 =
7
- Tens: 1 + 4 =
5
- Hundreds: 6 + 0 =
6
- Thousands: 5 + 0 =
5
✔ Answer:
5657
---
🔢 Problem 4: 8464 + 24
```
8464
+ 24
------
```
- Ones: 4 + 4 =
8
- Tens: 6 + 2 =
8
- Hundreds: 4 + 0 =
4
- Thousands: 8 + 0 =
8
✔ Answer:
8488
---
🔢 Problem 5: 1685 – 42
```
1685
- 42
------
```
- Ones: 5 – 2 =
3
- Tens: 8 – 4 =
4
- Hundreds: 6 – 0 =
6
- Thousands: 1 – 0 =
1
✔ Answer:
1643
---
🔢 Problem 6: 9078 – 73
```
9078
- 73
------
```
- Ones: 8 – 3 =
5
- Tens: 7 – 7 =
0
- Hundreds: 0 – 0 =
0
- Thousands: 9 – 0 =
9
✔ Answer:
9005
*(Note: Even though hundreds digit is 0, we keep it since it’s part of the 4-digit number.)*
---
🔢 Problem 7: 9458 – 38
```
9458
- 38
------
```
- Ones: 8 – 8 =
0
- Tens: 5 – 3 =
2
- Hundreds: 4 – 0 =
4
- Thousands: 9 – 0 =
9
✔ Answer:
9420
---
🔢 Problem 8: 5289 – 75
```
5289
- 75
------
```
- Ones: 9 – 5 =
4
- Tens: 8 – 7 =
1
- Hundreds: 2 – 0 =
2
- Thousands: 5 – 0 =
5
✔ Answer:
5214
---
🔢 Problem 9: 8067 – 21
```
8067
- 21
------
```
- Ones: 7 – 1 =
6
- Tens: 6 – 2 =
4
- Hundreds: 0 – 0 =
0
- Thousands: 8 – 0 =
8
✔ Answer:
8046
---
##
✔ Final Answers:
1.
5677
2.
3197
3.
5657
4.
8488
5.
1643
6.
9005
7.
9420
8.
5214
9.
8046
---
📌
Key Tip for “Without Regrouping”:
In every problem, each digit in the top number is ≥ the digit below it (for subtraction), or adding won’t cause a sum ≥10 (for addition). So you can just compute column by column — no carrying or borrowing needed!
Let me know if you want to check your work or need help with regrouping next! 😊
Parent Tip: Review the logic above to help your child master the concept of math worksheets grade 4.
