Math Flashcards
7 cards from real BECE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Math flashcards as text
A shopkeeper buys an item for $80 and sells it for $100. What is the percentage profit?
Answer: 25%
Profit = $20; % profit = (20/80) × 100 = 25%.
What is the interior angle sum of a hexagon?
Answer: 720°
Sum of interior angles = (n − 2) × 180° = (6 − 2) × 180° = 720°.
Solve the simultaneous equations: x + y = 7 and x − y = 3
Answer: x = 5, y = 2
Adding: 2x = 10, x = 5; substituting back: 5 + y = 7, y = 2.
What is the circumference of a circle with radius 7 cm? (Use π ≈ 22/7)
Answer: 44 cm
Circumference = 2πr = 2 × (22/7) × 7 = 44 cm.
The mode of the data set {3, 7, 5, 7, 9, 3, 7, 2} is:
Answer: 7
7 appears three times, more than any other value, so it is the mode.
Which of the following is equivalent to 2³ × 2⁴?
Answer: 2⁷
When multiplying same bases, add exponents: 2³ × 2⁴ = 2^(3+4) = 2⁷.
A cylindrical tank has radius 3 m and height 7 m. What is its volume? (Use π ≈ 22/7)
Answer: 198 m³
Volume = πr²h = (22/7) × 9 × 7 = 22 × 9 = 198 m³.