My Child Is Great at Reading But Terrible at Math
Math can be hard even when reading is easy. One small study chose some children with dyscalculia and no reading trouble (Landerl, Bevan and Butterworth, 2004). It was a small study. Math well below your child's other schoolwork is a reason to ask for help. Keep teaching the math while you work out what is hard.
TL;DR
- Math can be hard even when reading is easy. One small study chose some children with dyscalculia and no reading trouble (Landerl, Bevan and Butterworth, 2004). It was a small study.
- One review drew on studies of children with math trouble, reading trouble, or both (Starling-Alves, Peters and Wilkey, 2025). In it, trouble with the size of numbers came with math trouble. That held with or without reading trouble.
- A German medical guideline summary says people with dyscalculia are more likely to also have dyslexia (Haberstroh and Schulte-Körne, 2019). Coming together is not the same as one causing the other.
- Math well below your child's other schoolwork is a reason to ask for help.
- Keep teaching the math while you work out what is hard. Our position is that a lost skill goes to a doctor first.
Dyscalculia describes lasting difficulty with number and calculation, out of step with the rest of a child's learning. In our view, the word tells you what is hard more than why.
”DyscalculiaCan math be hard when reading is easy?
One small study compared children aged 8 to 9 (Landerl, Bevan and Butterworth, 2004). It chose some children with dyscalculia and no reading trouble. They scored high-average on IQ, word knowledge and working memory tests. They were still weak on basic number tasks. It was a small study. Later work, such as Kißler and Kuhn (2025), finds more mixed patterns than one number problem.
In one large UK study, dyscalculia meant a math score below a cut-off (Devine and colleagues, 2018). Reading also had to be above the cut-off.
One large twin study looked at dyscalculia, dyslexia and ADHD together (van Bergen and colleagues, 2025). Each difficulty was set by a cut-off the study chose, not a diagnosis. In that study, a child with one was more likely than other children to have a second. Most had only one.
That is a finding about many children.
To us, trouble with math does not mean a child is not smart.
What studies of math-only trouble found
One review drew on studies of children with math trouble, reading trouble, or both (Starling-Alves, Peters and Wilkey, 2025). In it, trouble with the size of numbers came with math trouble. That held with or without reading trouble. Trouble with the sounds in words and with naming things fast came with reading trouble. Its authors say how the two combine is still unclear.
So this review ties trouble with the size of numbers to math, not to reading.
In the same review, math trouble alone also came with a weak spot (Starling-Alves and colleagues, 2025). It was memory for what is seen and where.
A German medical guideline summary says people with dyscalculia are more likely to also have dyslexia (Haberstroh and Schulte-Körne, 2019). Coming together is not the same as one causing the other.
Starting with the math
One expert summary says dyscalculia difficulties "may go unnoticed until Grade 4" (Jordan and Devlin, 2023). In our view, act on a sign when you see it.
Math well below your child's other schoolwork is a reason to ask for help.
Keep teaching the math while you work out what is hard.
A word problem asks for reading as well as math. Read the same problem aloud. If the answer is now right, the reading was at least part of the trouble.
In our view, the first step is usually to work out what is hard. Our position is that a lost skill goes to a doctor first.
When to ask for help
Each of these is a reason to ask for help on its own.
- Little change, even with steady practice and good teaching.
- Math well below your child's other schoolwork.
- A teacher who raises a concern about math.
- Extreme upset about math.
- Complete avoidance of math.
- Worry about math that spreads into the rest of learning.
- Sadness or worry that lasts.
- A skill that was there and has gone. Our position is that a lost skill goes to a doctor first, not a tutor.
If no skill has gone, start with the teacher. Say what you are seeing at home, and what you have tried. Beyond the teacher, the right person depends on what it turns out to be about. If the work is too hard, someone who works on that school skill. If worry or mood is the thing, someone who works with children's mental health. In our view, if you are worried enough to ask, a professional evaluation is worth asking about.
Any talk of hurting themselves is a same-day call to your doctor or a crisis line.
In the classroom
In our view, strong readers can still need math taught step by step. Note which step goes wrong, not only the answer.
One sentence for an email home: "He reads the word problems well, but the sums inside them go wrong. Could we look at one together?"
Key Takeaways
In one review, trouble with the size of numbers came with math trouble, with or without reading trouble (Starling-Alves, Peters and Wilkey, 2025).
Math well below your child's other schoolwork is a reason to ask for help.
Keep teaching the math while you work out what is hard.
In our view, the first step is usually to work out what is hard. Our position is that a lost skill goes to a doctor first.
Ask your child to explain one sum out loud. Write down where the explaining stops. Take your note to the teacher.
”What to do tonightWhat to use next
A set of questions you answer about what you see at home. A screener is a starting point, not a diagnosis. If your child might need formal accommodations (an IEP or 504 plan), or you suspect a vision, hearing, or medical cause, pursue a professional evaluation too — that's the only route to those supports.
What sits underneath arithmetic, one skill at a time, worked alongside math instruction, not in place of it.
Common questions from parents
Can a strong reader have dyscalculia?
Dyscalculia can come without reading trouble. One small study chose some children aged 8 to 9 with dyscalculia and no reading trouble (Landerl, Bevan and Butterworth, 2004). They were still weak on basic number tasks. It was a small study. In one large UK study, dyscalculia meant a math score below a cut-off (Devine and colleagues, 2018). Reading also had to be above the cut-off.
My child is bright. Why is math so hard?
To us, trouble with math does not mean a child is not smart. One small study chose some children with dyscalculia and no reading trouble (Landerl, Bevan and Butterworth, 2004). They scored high-average on IQ, word knowledge and working memory tests. It was a small study. Keep teaching the math while you work out what is hard.
Should I tell the teacher?
Yes. Math well below your child's other schoolwork is a reason to ask for help. Our position is that a lost skill goes to a doctor first, not a tutor. If no skill has gone, start with the teacher. Say what you are seeing at home, and what you have tried.