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Adding Partial Sums worksheet with three addition problems using place value columns.

A math worksheet titled "Adding Partial Sums" with three addition problems (456 + 341, 750 + 186, 267 + 613) using place value columns for hundreds, tens, and ones.

A math worksheet titled "Adding Partial Sums" with three addition problems (456 + 341, 750 + 186, 267 + 613) using place value columns for hundreds, tens, and ones.

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Show Answer Key & Explanations Step-by-step solution for: Digital Add Partial Sums 3 Digit Numbers
Let's solve the "Adding Partial Sums" worksheet step by step. The goal is to fill in the place values (hundreds, tens, ones) for each number, then add the partial sums to find the total.

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🔢 Problem 1: 456 + 341



#### Step 1: Break down each number by place value

| Hundreds | Tens | Ones |
|----------|------|------|
| 4 | 5 | 6 |
| 3 | 4 | 1 |

Now add the partial sums:

- Hundreds: 400 + 300 = 700
- Tens: 50 + 40 = 90
- Ones: 6 + 1 = 7

Now add them together:
> 700 + 90 + 7 = 797

Answer: 797

---

🔢 Problem 2: 750 + 186



#### Step 1: Break down each number

| Hundreds | Tens | Ones |
|----------|------|------|
| 7 | 5 | 0 |
| 1 | 8 | 6 |

Now add the partial sums:

- Hundreds: 700 + 100 = 800
- Tens: 50 + 80 = 130
- Ones: 0 + 6 = 6

Now add them together:
> 800 + 130 + 6 = 936

Answer: 936

---

🔢 Problem 3: 267 + 613



#### Step 1: Break down each number

| Hundreds | Tens | Ones |
|----------|------|------|
| 2 | 6 | 7 |
| 6 | 1 | 3 |

Now add the partial sums:

- Hundreds: 200 + 600 = 800
- Tens: 60 + 10 = 70
- Ones: 7 + 3 = 10

Now add them together:
> 800 + 70 + 10 = 880

Answer: 880

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Final Answers:



1. 456 + 341 = 797
2. 750 + 186 = 936
3. 267 + 613 = 880

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📝 How to Fill in the Worksheet:



For each box:

#### Example: 456 + 341

```
Hundreds: 400 + 300 = 700
Tens: 50 + 40 = 90
Ones: 6 + 1 = 7
```

Then:
> 700 + 90 + 7 = 797

Repeat this process for the others.

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Parent Tip: Review the logic above to help your child master the concept of partial sums addition worksheet.
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