Let's solve each problem step by step using
place value addition (H = Hundreds, T = Tens, O = Ones). We'll add the numbers in each problem using the boxes provided.
---
1. Daddy collected 322 stamps. I collected 245 stamps. How many stamps did we collect in all?
Add:
322 + 245
```
H T O
3 2 2
+ 2 4 5
-----------
5 6 7
```
✔ Answer: 567 stamps
---
2. Maxine saved 436 shells in May and 342 in June. How many shells did she have altogether?
Add:
436 + 342
```
H T O
4 3 6
+ 3 4 2
-----------
7 7 8
```
✔ Answer: 778 shells
---
3. A fisherman caught 212 fish on Monday and 563 on Tuesday. What is the total amount of fish he caught?
Add:
212 + 563
```
H T O
2 1 2
+ 5 6 3
-----------
7 7 5
```
✔ Answer: 775 fish
---
4. Mr Bob bought 123 pencils for his class. Sarah brought 43 more. What is the sum of pencils in the class?
Add:
123 + 43
Note: 43 has no hundreds, so write it as 043.
```
H T O
1 2 3
+ 0 4 3
-----------
1 6 6
```
✔ Answer: 166 pencils
---
5. Last week Serge sold 342 boxes of milk; this week they sold 416. What is the total amount of milk sold?
Add:
342 + 416
```
H T O
3 4 2
+ 4 1 6
-----------
7 5 8
```
✔ Answer: 758 boxes
---
6. Farmer Todd grew 412 carrots and farmer Carl grew 315. How many carrots did they grow in all?
Add:
412 + 315
```
H T O
4 1 2
+ 3 1 5
-----------
7 2 7
```
✔ Answer: 727 carrots
---
✔ Final Answers:
1.
567 stamps
2.
778 shells
3.
775 fish
4.
166 pencils
5.
758 boxes of milk
6.
727 carrots
---
🔧 How to fill in the boxes:
Each box is labeled H (Hundreds), T (Tens), O (Ones).
For example, for
322 + 245:
- First row: 3 (H), 2 (T), 2 (O)
- Second row: 2 (H), 4 (T), 5 (O)
- Third row (sum): 5 (H), 6 (T), 7 (O)
And the small circle on the left is for
carrying over, but none of these problems require carrying beyond a single digit (no regrouping needed in any case).
---
Let me know if you'd like a printable version or want to see how to handle carrying!
Parent Tip: Review the logic above to help your child master the concept of printable three digit addition worksheets.
