IGCSE Add Math Exam Guide
How to Go from a C to a B in Add Math
Written by Rig, our founder
8 years teaching IGCSE & SPM maths · Updated 16 August 2026
A C in Add Math is frustrating precisely because it usually isn’t a ceiling, it’s a small number of fixable problems, each costing a handful of marks that add up to a grade. In eight years of teaching 0606, the C-to-B jump has almost never been about ability. It’s about diagnosing the specific leaks and closing them in the right order.
First, find which C you have
Three very different problems all produce a C, and they need different fixes:
- Foundation gaps. Weak algebra, surds or index work that the whole syllabus quietly assumes. This is the most common cause, and the most important to fix first, because more Add Math practice on a shaky foundation helps very little.
- Method gaps. The content is understood but the routines aren’t automatic, so questions take too long and unravel under pressure.
- Execution gaps. The student can do it at home but leaks marks in the exam through poor working and timing.
Most students stuck at C have the first two. Identifying which is yours is the whole game, guessing wastes months.
Fix the foundation before anything else
If the algebra underneath is weak, that is the priority, full stop. A student who can’t confidently manipulate fractions, factorise, or handle surds and indices by hand will keep hitting the same wall across every topic. This isn’t glamorous work, but it’s where the C-to-B jump usually begins, and skipping it is why students grind for months without moving.
Then lock in the high-frequency routines
With foundations solid, target the topics that appear every session: calculus, trigonometry, quadratics. These are method-heavy and trainable, drill the stationary-points routine, the identity proof, until they’re automatic. A B is largely a matter of reliably scoring on the topics that come up in most sessions.
Stop leaking the marks you’ve earned
Finally, protect the marks the working already deserves. Showing method line by line turns an arithmetic slip into a one-mark loss instead of a whole-question loss, and a past-paper error log catches the repeat mistakes that quietly cap a grade. For many C students, this alone is worth several marks.
A specialist can diagnose which of the three problems is holding your child within an hour, that read is exactly what the 1-hour trial class provides. Message us on WhatsApp with your child’s current grade to book.