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Subtract Double Digits Without Regrouping Using the Break Apart Strategy
Students need more than one way to approach subtraction, especially when they’re first learning to subtract double digits without regrouping.
That’s why I love using the break apart strategy – it’s a simple way for students to see what they’re doing and feel successful with subtraction right from the start.
The break apart method helps students break down numbers into tens and ones, making the subtraction process less overwhelming.
You may also hear this called the partial differences strategy.
No matter what you call it, it gives students the confidence to tackle two-digit problems step by step.
If you’ve already introduced subtraction with base ten blocks, this strategy is a natural next step.
Students continue to rely on their understanding of place value, just without the hands-on tools.
It aligns with 2.NBT.5 and supports students in using different methods to subtract double digits without regrouping.
I always introduce it slowly, and once they get the hang of it, the growth is easy to see.
And if you’re looking for something to support this in your classroom, I have a resource that’s ready to go – no extra prep needed.
2-Digit Subtraction Strategy Without Regrouping
Teaching your students to subtract double digits without regrouping can be much smoother when they’re taught a clear strategy they can use again and again.
With the break apart method, students feel less overwhelmed and more capable of solving problems on their own.
Here’s a closer look at what this strategy looks like in action – and how you can teach it with confidence.
Break Apart Strategy in Action
Let’s start with 47 – 25.
Start by breaking apart the second number (25) into 20 and 5.
This helps students see each part of the number clearly, just like they do when writing in expanded form.
Tip:
Always break apart the second number only.
That habit builds consistency and prevents confusion later when regrouping is introduced.
Use boxes to help students organize their thinking. (This is built right into my worksheets so students can stay focused on the math.)
Be sure students write 20 – not just 2!
This is a place value skill in disguise, and it’s worth correcting early before it causes bigger misunderstandings.
Once the number is broken apart, subtract one piece at a time.
47 – 20 = 27
27 – 5 = 22
Encourage students to circle their final answer.
This small step gives them a chance to double-check their work – and it gives you a quick visual to assess whether they followed all the steps.
This strategy helps students understand subtraction in a deeper way.
They’re not just borrowing or crossing out numbers – they’re thinking through each step of the process.
Why the Break Apart Method Works
This strategy helps students feel successful.
They’re not overwhelmed by big numbers, and they’re not stuck if regrouping hasn’t clicked yet.
You can refer to this strategy as break apart or partial differences – both are correct and worth mentioning to your students.
That way, if they come across a problem on a test that uses unfamiliar vocabulary, they’ll still know what to do.
When you’re teaching students to subtract double digits without regrouping, structure and visual support make all the difference.
I’ve found that this method gives students a strong foundation – and when paired with the right visuals and structure, they can work independently while you support small groups.
That’s exactly why I created these low-prep subtraction practice pages.
They’re designed with built-in supports like number boxes, place value cues, and space to show each step clearly – perfect for helping students subtract double digits without regrouping with confidence.
Ready-to-Use Subtraction Practice That Reinforces This Strategy
If you’re looking for print-and-go practice that reinforces the break apart strategy, this resource is for you.
It includes multiple two-digit subtraction problems without regrouping, and each page is built to help students follow the strategy correctly and independently.
You’ll save time planning, and your students will build confidence with every problem they complete as they continue to subtract double digits without regrouping using a strategy that makes sense.
Click the image below to grab your copy on TPT and start using it tomorrow!
Want to try this strategy with your students before committing to the full resource?
Download the free sample worksheets and see how it works in your classroom.
Need help or have questions?
If you need help or have questions, the easiest way to reach me is to DM me on Instagram @techieturtleteacher.
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