WAEC Questions and Answers on Mathematics 2016

Mathematics is an important subject in WAEC, and practicing past questions is one of the best ways to prepare for the exam. Below are some WAEC 2016 mathematics questions and answers to help you get a better understanding of the kind of questions asked. Make sure to solve these questions carefully to improve your problem-solving skills.

Old WAEC Questions and Answers on Mathematics 2016

Question: What is the value of x in the equation 2x + 3 = 11?

Answer: x = 4

Question: If the area of a rectangle is 48 cm² and its length is 8 cm, what is the width?

Answer: The width is 6 cm.

Question: Simplify 5x + 3x – 2x.

Answer: 6x.

Question: Find the value of y when 3y – 5 = 10.

Answer: y = 5.

Question: Calculate the simple interest on ₦5000 at a rate of 5% per annum for 2 years.

Answer: ₦500.

Question: What is the perimeter of a square with a side length of 7 cm?

Answer: 28 cm.

Question: Factorize the expression 2x² + 8x.

Answer: 2x(x + 4).

Question: If a man travels 150 km in 3 hours, what is his average speed?

Answer: 50 km/h.

Question: Convert 0.75 to a fraction.

Answer: 3/4.

Question: Find the gradient of a line that passes through the points (2, 3) and (5, 11).

Answer: 8/3.

Question: Solve for z in the equation 4z – 2 = 14.

Answer: z = 4.

Question: What is the circumference of a circle with a radius of 10 cm? (Use π = 3.14)

Answer: 62.8 cm.

Question: Find the value of m in the equation 5m – 7 = 18.

Answer: m = 5.

Question: If the volume of a cube is 64 cm³, what is the length of each side?

Answer: 4 cm.

Question: Express 125 as a product of its prime factors.

Answer: 5 × 5 × 5.

Question: If the sum of angles in a triangle is 180°, and two angles are 50° and 60°, find the third angle.

Answer: 70°.

Question: Simplify the expression 3a² + 2a – a² – 4a.

Answer: 2a² – 2a.

Question: Calculate the mean of the numbers 4, 6, 8, 10, and 12.

Answer: 8.

Question: What is the value of x in the equation 3x + 12 = 21?

Answer: x = 3.

Question: Find the area of a triangle with a base of 5 cm and a height of 8 cm.

Answer: 20 cm².

Question: Simplify the expression 4(x – 2) + 3(2x + 1).

Answer: 10x – 5.

Question: Solve for y: 7y + 2 = 30.

Answer: y = 4.

Question: Find the least common multiple (LCM) of 6 and 8.

Answer: 24.

Question: If a car uses 15 liters of petrol to travel 150 km, how many liters will it use to travel 300 km?

Answer: 30 liters.

Question: What is the square root of 81?

Answer: 9.

Question: If 5x – 3 = 12, find the value of x.

Answer: x = 3.

Question: Find the area of a circle with a radius of 7 cm. (Use π = 3.14)

Answer: 153.86 cm².

Question: Express 0.125 as a fraction.

Answer: 1/8.

Question: Find the value of m in the equation 9m + 6 = 33.

Answer: m = 3.

Question: Calculate the volume of a rectangular box with dimensions 4 cm, 5 cm, and 6 cm.

Answer: 120 cm³.

Question: If the total angles in a quadrilateral sum to 360°, and three angles are 90°, 85°, and 95°, find the fourth angle.

Answer: 90°.

Question: Simplify the expression 5x – 2(x + 3).

Answer: 3x – 6.

Question: If the perimeter of a rectangle is 30 cm and the length is 8 cm, what is the width?

Answer: 7 cm.

Question: Solve for z in the equation 2z + 7 = 15.

Answer: z = 4.

Question: Convert 3/5 to a decimal.

Answer: 0.6.

Question: If a train travels 240 km in 4 hours, what is its speed?

Answer: 60 km/h.

Question: Find the value of x in the equation 7x – 5 = 30.

Answer: x = 5.

Question: What is the cube root of 64?

Answer: 4.

Question: Calculate the simple interest on ₦10000 at a rate of 4% per annum for 3 years.

Answer: ₦1200.

Question: Solve for y: 8y – 3 = 21.

Answer: y = 3.

Question: What is the probability of rolling a 4 on a fair six-sided die?

Answer: 1/6.

Question: Find the area of a trapezium with parallel sides of 6 cm and 10 cm, and a height of 5 cm.

Answer: 40 cm².

Question: If the sum of the digits of a two-digit number is 9 and the number is divisible by 9, what is the number?

Answer: 18.

Question: Simplify the expression 6(x + 2) – 4(2x – 3).

Answer: –2x + 18.

Question: Find the least common multiple (LCM) of 9 and 12.

Answer: 36.

Exam Pattern and Syllabus

WAEC Mathematics Exam Pattern: The WAEC Mathematics exam typically consists of two papers: Paper 1 (Objective) and Paper 2 (Essay). Paper 1 has multiple-choice questions, while Paper 2 requires students to solve problems and show their workings.

WAEC Mathematics Syllabus:

1. Number and Numeration
2. Algebraic Processes
3. Geometry
4. Trigonometry
5. Statistics and Probability
6. Mensuration
7. Calculus (Differentiation and Integration)

WAEC Mathematics covers various areas to assess a student’s understanding of basic mathematical concepts, problem-solving, and application of formulas. It is important to review these topics and practice solving past questions.

Practicing these questions will help you feel more confident in your exam preparation. Focus on understanding the problems and solving them step by step.