JAMB Maths: how to answer faster without losing marks

In the JAMB CBT you have limited time for every subject, so speed matters as much as accuracy.

Work backwards from the options

For "solve" questions, substituting the options is often quicker than solving. If $2x+7=15$, try each option until one gives 15.

Estimate before calculating

For $\sqrt{0.0049}$, notice that $0.07^2=0.0049$, so the answer is $0.07$.

Skip, flag and return

Don't spend more than 90 seconds on one question on your first pass. Flag it and come back.

Learn the high-frequency formulas

• Sum of an arithmetic series: $S_n=\frac{n}{2}\left(2a+(n-1)d\right)$
• Simple interest: $I=\frac{PRT}{100}$
• Area of a sector: $\frac{\theta }{360}\times \pi r^2$

Practise with a timer from the start so the real exam feels familiar.