3-Digit Subtraction with Regrouping Using Base Ten Blocks - Free Printable

It looks like you've uploaded an image related to a math educational activity titled "Three Digit Subtraction with Regrouping Using Base Ten Blocks" by *Teachie Turtle Teacher*. However, the actual problem or task isn't visible in the image — it shows a worksheet template and base ten blocks (hundreds, tens, and ones), but no specific subtraction problem is shown.

Let me explain what this activity is about and how to solve a typical three-digit subtraction problem with regrouping using base ten blocks, so you can apply it to any problem on the worksheet.

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🔢 What Are Base Ten Blocks?

Base ten blocks help visualize numbers:
- Blue square (100 unit block) = 100
- Pink rod (10 unit block) = 10
- Green cube (1 unit block) = 1

These help students understand place value and regrouping.

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🧮 Example Problem:

Let’s solve:
342 - 178 = ?

We'll use base ten blocks to model this step-by-step.

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Step 1: Represent 342 with Base Ten Blocks

- 3 hundreds → 3 blue squares
- 4 tens → 4 pink rods
- 2 ones → 2 green cubes

So:
🟦🟦🟦 | 🟩🟩🟩🟩 | 🟨🟨

(3 hundreds, 4 tens, 2 ones)

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Step 2: Subtract 178

We need to remove:
- 1 hundred
- 7 tens
- 8 ones

But we only have 2 ones, and we need to subtract 8 ones → Not enough! So we must regroup.

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Step 3: Regroup (Borrow)

We need more ones. Let's take 1 ten rod (10) and break it into 10 ones.

Now:
- Tens: 4 – 1 = 3 tens
- Ones: 2 + 10 = 12 ones

Now we have:
- 3 hundreds
- 3 tens
- 12 ones

Now subtract:
- 1 hundred → 3 – 1 = 2 hundreds
- 7 tens → But we only have 3 tens! Not enough again → Regroup again!

Take 1 hundred (100) and break it into 10 tens.

Now:
- Hundreds: 2 – 1 = 1 hundred
- Tens: 3 + 10 = 13 tens
- Ones: 12 (unchanged)

Now subtract:
- 1 hundred → 1 – 1 = 0 hundreds
- 7 tens → 13 – 7 = 6 tens
- 8 ones → 12 – 8 = 4 ones

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✔ Final Answer:

342 – 178 = 164

Visualized with blocks:
- 1 hundred (blue square)
- 6 tens (pink rods)
- 4 ones (green cubes)

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📝 Summary of Steps:

1. Model the larger number with base ten blocks.
2. Try to subtract each place (ones, tens, hundreds).
3. If not enough in a place, regroup (break a higher block into smaller ones).
4. Continue until all digits are subtracted.
5. Count remaining blocks to get the answer.

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💡 Tips for Students:

- Always start from the ones place.
- Only regroup when needed.
- Use physical or drawn blocks to see the process clearly.

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If you can provide the specific problem from your worksheet (e.g., "423 - 189"), I can walk you through that exact one using base ten blocks!

Would you like to do that?