Preparing for the NECO Mathematics exam can be stressful — but knowing the most repeated topics and reviewing past questions with answers can give you a serious edge. This 2025/2026 NECO Maths guide highlights key topics, important questions, and simple answers to help you pass with ease.
Most Repeated NECO Mathematics Topics (2025/2026)
Here are the top NECO math topics that appear almost every year:
| Topic | Subtopics |
|---|---|
| Number and Numeration | Base 2, BODMAS, LCM, HCF, Fractions, Decimals, Percentages |
| Algebra | Linear Equations, Simple Inequalities, Word Problems |
| Geometry and Mensuration | Angles, Triangles, Circles, Area, Perimeter, Volume |
| Trigonometry | Sine, Cosine, Tangent, Pythagoras Theorem |
| Statistics | Mean, Median, Mode, Range, Bar Charts, Pie Charts |
| Simple and Compound Interest | Interest Calculations, Depreciation, Appreciation |
| Ratios and Proportions | Sharing, Direct and Inverse Proportions |
| Probability | Simple Probability Questions |
| Graphical Work | Linear Graphs, Gradient, Intercepts |
| Sets and Venn Diagrams | Union, Intersection, Complement, Universal Set |
Sample NECO Mathematics Past Questions and Answers
1. Algebra (Linear Equation)
Q: Solve 2x + 3 = 11
A:
2x = 11 - 3
2x = 8
x = 4
2. Geometry (Triangle)
Q: Find the area of a triangle with base 8 cm and height 5 cm.
A:
Area = ½ × base × height
= ½ × 8 × 5 = 20 cm²
3. BODMAS Rule
Q: Evaluate: 5 + 2 × (6 – 3)²
A:
= 5 + 2 × (3)²
= 5 + 2 × 9
= 5 + 18 = 23
4. Trigonometry
Q: A right triangle has an angle of 30° and the hypotenuse is 10 cm. Find the opposite side.
A:
sin 30° = opposite / hypotenuse
0.5 = x / 10 → x = 5
Answer: 5 cm
5. Probability
Q: What is the probability of picking a red ball from a bag with 3 red, 2 green, and 5 blue balls?
A:
Total balls = 3 + 2 + 5 = 10
Probability = 3 / 10 = 0.3
6. Simple Interest
Q: Find the simple interest on ₦2,000 at 5% for 3 years.
A:
SI = PRT/100 = 2000 × 5 × 3 / 100 = ₦300
7. Circle (Mensuration)
Q: Find the circumference of a circle with radius 7 cm. (Use π = 22/7)
A:
C = 2πr = 2 × 22/7 × 7 = 44 cm
8. Mean of a Data Set
Q: Find the mean of 3, 6, 9, 12, 15
A:
Sum = 45, Total = 5
Mean = 45 / 5 = 9
Proven Tips to Pass NECO Mathematics 2025/2026
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Practice daily with past questions
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Use a calculator only when allowed
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Understand formulas, don’t cram
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Learn the steps, not just the answers
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Time yourself in mock exams
Free NECO Mathematics Resources
You can get free NECO past questions PDFs from educational websites like:
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Myschool.ng
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Flashlearners.com
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Pass.ng
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Neco.gov.ng (official updates)
FAQs about NECO Mathematics 2025/2026
Q1: Is NECO Mathematics difficult?
A: Not if you study the past questions and understand the repeated topics.
Q2: Can I use a calculator in NECO?
A: Yes, but only basic calculators. No programmable ones.
Q3: How many questions are in NECO Maths exam?
A: Section A (Objective) – 50 questions
Section B (Theory) – Answer 5 out of 10 questions
Q4: How can I pass NECO Maths without a lesson teacher?
A: Use past questions, online tutorials, and consistent practice. Join study groups too.
Conclusion
Passing NECO Mathematics in 2025/2026 doesn’t require magic. Focus on the most repeated topics, master past questions, and practice often. With discipline and the right preparation, an A1 is possible! Start now and stay ahead.
