How to Help With Math Homework When You Don't Understand the New Method
You know 52 − 17 is 35. What you don't know is why your child is drawing jumps on a number line to get there. Here's how to help when the math is familiar but the method isn't.
10 min read
The short version
Let your child's method lead. Ask them to show you how they were taught, use a class example to rebuild the steps, and focus your questions on the reasoning rather than the answer. Save your own method for later — or for never. If neither of you can work out the class method, stop and ask the teacher.
Why the method looks so different
Many parents learned one standard way to add, subtract, multiply, and divide: line the numbers up, carry, borrow, done. Today, children are often shown several strategies first — number lines, breaking numbers into tens and ones, area models for multiplication, "friendly numbers" — before or alongside the standard method.
The aim is usually to help children understand why a calculation works, so they can estimate, spot unreasonable answers, and handle problems that don't look like the examples. It can look slower and stranger from the outside. We explore the broader shift in why homework feels harder for parents today.
Why jumping in with your method can backfire
It feels efficient: "Here, let me show you the quick way." But several things can go wrong:
- Your child now has two methods half-learned instead of one learned properly.
- They may worry that using your way will get them marked wrong — and sometimes they're right, if the homework is practising a specific strategy.
- It can create a quiet conflict: whose way is correct, the parent's or the teacher's?
- Your quick method skips the reasoning the homework is trying to build.
The familiar standoff
Priya, 8, is adding 38 + 45 by making 38 into 40 and taking 2 from 45. Her dad jumps in: "Just stack them and carry the one." Priya: "That's not how Ms. Chen does it!" Five minutes later, she's in tears and he's frustrated.
A better opening:
Dad: "Oh, that's different from how I learned. Walk me through what you're doing."
Ask your child to teach you
This is the most useful move you have. Explaining a method out loud forces your child to organise what they know — and you'll quickly hear where their understanding holds and where it thins out.
"Show me how your teacher does it. I want to learn this way."
"What's the first thing you do? Why that?"
"What's this line or box for?"
Play the curious student. Ask genuine questions. If your child gets stuck mid-explanation, you've found exactly where help is needed.
Use class examples to rebuild the method
If your child can't fully explain it, find a worked example: the textbook, class notes, the top of the worksheet, a photo of the board. Work through that example together, step by step, before touching the homework.
How to walk through a worked example
- Cover the steps and ask your child to predict what comes first.
- Reveal one step at a time and ask what changed and why.
- Once you've both followed the example, try the first homework question using the same steps.
- Keep the example visible so your child can refer back instead of asking you.
Rebuilding an area model
Marcus, 10, has 23 × 14 to do with an "area model." His mum has never heard of it. They find an example in his notes: 12 × 15 drawn as a rectangle split into four boxes.
Mum: "Why do you think they split 12 into 10 and 2?"
Marcus: "Because tens are easier."
Mum: "So how would you split 23 and 14?"
Marcus: "20 and 3, and 10 and 4." He draws his rectangle.
Focus on the reasoning, not just the answer
Because you already know the answer, it's tempting to check only that. But in new-method homework, the steps are often what the teacher is looking at. Ask questions that make the reasoning visible:
- "Why did you break the number up that way?"
- "What does this jump on the number line stand for?"
- "How do you know you've added all the parts?"
- "Does your answer seem about right? What would you estimate?"
- "Could you do it a different way and get the same answer?"
The Parent Question Generator can give you more questions like these for a specific grade and topic. And our article on why asking questions works better than giving answers explains why this approach sticks.
When your method and the teacher's method differ
Your method isn't wrong. It's just a different tool. The question is when to bring it in.
- While your child is learning the class method: keep yours to yourself. One method at a time.
- Once they're confident: you can use yours to check an answer together — "Let's see if my way gives the same result."
- If they're curious: compare the two. Seeing that both methods split numbers into place values can be a real "aha" moment.
If your child asks whether they can use your method on homework, the honest answer is often: "Check with your teacher. For now, let's practise the way you're learning in class."
Questions you can ask without solving it
A short list to keep handy when you feel the urge to take over:
"What's the first step your teacher showed you?"
"Is there an example like this one in your notes?"
"Which part of the method are you unsure about?"
"What would happen if you tried it and checked afterwards?"
"Can you show me the part you already did, and explain it?"
When neither of you understands the method
It happens — no notes, no example, and your child can't remember the lesson. Don't invent a version of the method, and don't substitute yours to "just get it done."
- Check the worksheet, textbook, and any school parent resources for a worked example.
- Ask your child whether a classmate or the class website shows the method.
- If nothing turns up, have your child attempt the question the best way they can and note that they weren't sure of the method.
"It's okay not to finish this one. Let's write down what you tried so your teacher can help tomorrow."
Our guides on explaining a lesson you don't fully understand and helping when you don't know the answer go further on this.
When to contact the teacher
- The same method has caused trouble on several nights.
- Your child says the method was never really explained in class.
- You'd like to know whether other methods are accepted on homework.
- You'd like to find out whether there are resources for parents to learn the method.
Teachers generally welcome a short, specific message. Something like: "Jamie is finding the partial products method tricky. Is there an example or video we could look at together?"
Conclusion
You don't need to master every new strategy. You need to let the class method lead, ask your child to show you how it works, use examples from class, and keep your questions on the reasoning. When the method stays a mystery, a note to the teacher is the right next step. Homework Together can help by turning a math worksheet into a coaching guide that follows the question as written, with what to say and ask at each step.
Frequently asked questions
Why don't schools just teach the method parents learned?
Many schools introduce strategies like number lines, area models, or breaking numbers apart first, to build an understanding of why calculations work. The standard method you learned is often taught later, once that understanding is in place.
Is it wrong to show my child my way of doing it?
Not wrong, but timing matters. Showing a different method while your child is still learning the class one can confuse them. Once they're comfortable with the school method, comparing it with yours can actually deepen understanding.
My child got the right answer my way. Will the teacher mark it wrong?
It depends on the task. If the homework is practising a specific method, the method is often the point, not just the answer. When in doubt, have your child use the class method, and ask the teacher whether other methods are accepted.
Where can I find out how the new method works?
Start with your child's notes, textbook, and any worked examples on the worksheet. Many schools also share parent guides or videos. Your child explaining it to you is often the fastest route of all.
What if my child can't remember how the method works?
Look for one worked example from class and work through it together, step by step. If there isn't one, it's reasonable to stop, note that the method wasn't clear, and ask the teacher.
Turn tonight's homework into a coaching guide
Paste the homework, snap a photo, or upload the PDF. Homework Together gives you what to say, what to ask, and how to respond — question by question.
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