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Educational worksheet for teaching three-digit addition with regrouping using the break apart method.

Three-digit addition with regrouping worksheet using the break apart (partial sums) method, featuring an example problem and space for student work.

Three-digit addition with regrouping worksheet using the break apart (partial sums) method, featuring an example problem and space for student work.

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Show Answer Key & Explanations Step-by-step solution for: 3 Digit Addition Break Apart Method with Regrouping
Absolutely! Let’s solve the problem shown in the image using the Break Apart Method (Partial Sums), which is a great strategy for understanding place value and regrouping in addition.

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🎯 Problem to Solve:


682 + 248

We’ll break each number into its hundreds, tens, and ones, then add those parts separately.

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## ✏️ Step-by-Step Solution Using Break Apart Method:

Step 1: Break apart each number by place value



- 682 = 600 (hundreds) + 80 (tens) + 2 (ones)
- 248 = 200 (hundreds) + 40 (tens) + 8 (ones)

We write this as:

```
600 + 80 + 2
+ 200 + 40 + 8
------------------------
```

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Step 2: Add the hundreds, tens, and ones separately



- Hundreds: 600 + 200 = 800
- Tens: 80 + 40 = 120
- Ones: 2 + 8 = 10

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Step 3: Add the partial sums together



Now we add the results from each place:

> 800 + 120 + 10

Let’s do it step by step:

- 800 + 120 = 920
- 920 + 10 = 930

So, 682 + 248 = 930

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## 🔍 Why This Works (Explanation):

The Break Apart Method helps students understand place value — that each digit represents a different value (hundreds, tens, ones). Instead of just “carrying” numbers like in the standard algorithm, you’re adding similar place values together first. This makes regrouping more intuitive because you can see *why* you might need to regroup (e.g., 120 in the tens place means you have 1 hundred and 20 tens).

In this case:
- The tens sum was 120 → that’s 100 + 20 → so you’d regroup 100 to the hundreds.
- The ones sum was 10 → that’s 10 → you’d regroup 10 to the tens (but since we already added everything, we just combine all partial sums).

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## 🧩 Final Answer:
> 682 + 248 = 930

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## 💡 Tip for Students:
When using the Break Apart Method, always line up the same place values when adding — hundreds with hundreds, tens with tens, etc. This prevents mistakes and builds strong number sense!

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Let me know if you’d like to see this solved with the standard algorithm too — or try another problem! 😊
Parent Tip: Review the logic above to help your child master the concept of breaking apart worksheet.
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