What to do when your child says "I'm bad at maths
On this page
52 − 27 = 35. A child who writes that and then says "I'm bad at maths" is wrong about themselves. They know their subtraction facts perfectly well. They have taken the smaller digit from the bigger one in each column (7 − 2 and 5 − 2) and skipped one step, exchanging a ten for ten ones. That is a single, fixable gap, not a verdict on their ability.
The sentence is worth taking seriously anyway, because a child who believes it often stops trying, and a child who stops trying does fall behind.
Step 1: ask what they mean
"I'm bad at maths" can hide very different problems. Before reassuring, ask a couple of calm questions:
- "What happened today that made you feel that?"
- "Which bit feels hardest right now?"
- "Is there any maths you feel all right about?"
You might hear "I got the lowest score in the tables test", "I don't get fractions" or "Everyone else finishes first". A child who is slower than friends may be perfectly accurate. A child who "doesn't get fractions" may have a gap in division from two years ago. Each needs a different response.
Step 2: read the mistakes
Wrong answers usually have a pattern, and the pattern tells you what to practise.
| Wrong answer | What it shows | What to do |
|---|---|---|
| 52 − 27 = 35 | Subtracting the smaller digit from the bigger one in each column | Practise exchanging with coins or base-ten blocks |
| 1/2 + 1/4 = 2/6 | Adding the tops and the bottoms | Ask if 2/6 is bigger or smaller than 1/2; use folded paper strips |
| "24 sweets shared between 4 children: 28 each" | Saw two numbers and added them | Read the question aloud, then draw or act it out |
| 6 × 7 takes twenty seconds | Counting up rather than recalling | Short daily times tables practice |
The third example is worth a closer look. The arithmetic is fine; the difficulty is reading the problem and choosing the operation. Ask your child to say in their own words what the question wants before any numbers go on the page.
Turning "I'm bad at maths" into "I need to practise this one step" is honest, and far more motivating than a page of red crosses. Our guide to column methods for parents walks through the exchanging step in detail.
Step 3: watch your words
Helpful
- "You can't do it yet." It turns a fixed label into a stage.
- "Show me what you tried." This tells them their thinking matters, and often reveals a method that is nearly right.
- "Everything up to here is correct. Let's look at just this bit."
- "I found this hard too, and I got better at it", but only if it is true.
Less helpful
- "I was never any good at maths either." Kindly meant, but it suggests maths ability runs in families and cannot change.
- "It's easy, look." If it were easy for them, they would not be upset.
- "You're so clever." It can backfire the first time they get something wrong. Praise effort and strategy instead: "You kept going when that one was tricky."
Step 4: build small wins
Confidence follows success, and success comes from practice at the right level.
Go back a step. Find a level where your child gets most answers right, even if it feels too easy, and stay there for a week or two before moving on.
Practise little and often. Ten minutes a day is more effective than an hour at the weekend and much less likely to end in tears. For primary children, times tables are often a good place to start, because so much else depends on them. Our weekly times tables plan breaks this into five-minute sessions.
Start and finish with something they can do. A session made entirely of hard questions confirms the belief.
Come back on three different days. One correct answer does not mean a skill is secure.
Use everyday maths. Working out change, halving a recipe, counting the days to a birthday. None of it looks like school maths, which is exactly why children relax and find they can do more than they thought.
Keep a "can do" list. Once a week, write down one thing your child can now do that they could not before. After a month it is hard to argue "I'm bad at maths" with the evidence on the fridge.
Try it: a two-week plan. Each day, do one short task your child is sure to get right, then one slightly harder. Anything that was hard in week one and easy in week two goes on the "can do" list. Read the list together at the end.
When to talk to school
Arrange a chat with the class teacher if:
- the upset happens most days, or your child refuses maths homework altogether
- they seem to be falling further behind despite regular practice
- they struggle with number sense in ways that seem unusual for their age, such as comparing two numbers or relying on finger counting well into upper primary
Teachers can tell you how your child is doing in class, which is often better than the child fears. Where difficulties persist, the school's SENCo can look at whether extra support or an assessment would help. Persistent, severe difficulty with numbers is sometimes called dyscalculia; it is recognised, and support exists.
Attitudes usually change over weeks, not days. Keep the same calm messages going, and give maths a regular, short place in the week. If you have not set one up yet, our guide to a homework routine that lasts explains how.
Sources and further reading
- Dyscalculia (British Dyslexia Association) – what dyscalculia and wider maths difficulties look like, and how assessment works.
- Children with special educational needs and disabilities (GOV.UK) – how SEN support works in school and when to contact the SENCo.
- Parental engagement (Education Endowment Foundation) – a summary of research on how parents can best support learning at home.
