Examination on General Mathematics
Class: JSS 3
Term: First Term
Time: 1 Hour
Total Marks: 70

SECTION A: OBJECTIVES (40 Marks)
Instruction: Answer all questions.

1. ________ numbers are represented by only two digits, 0 and 1. (a) Decimal (b) Binary (c) Hexadecimal (d) Octal
2. The product of 101 base 2 and 11 base 2 is ________. (a) 1111 base 2 (b) 1001 base 2 (c) 1101 base 2 (d) 1011 base 2
3. Which of the following is an example of direct proportion? (a) More workers, less time (b) More speed, less time (c) More goods, more cost (d) More distance, less fuel
4. The reciprocal of 2/3 is ________. (a) 3/2 (b) -2/3 (c) 1/3 (d) 2
5. The formula for the area of a trapezium is ½(a+b)h, where ‘a’ and ‘b’ are the lengths of the ________ sides. (a) equal (b) parallel (c) perpendicular (d) adjacent
6. Factorizing 3x + 6y completely gives ________. (a) 3(x+y) (b) 6(x+y) (c) 3(x+2y) (d) 3x(1+2y)
7. Which of these is NOT a method for solving simultaneous linear equations? (a) Substitution (b) Elimination (c) Graphical (d) Factorization
8. If y varies directly as x, and y=10 when x=5, find the constant of proportionality, k. (a) 5 (b) 2 (c) 0.5 (d) 50
9. The value of 1101 base 2 in base 10 is ________. (a) 13 (b) 11 (c) 9 (d) 7
10. All of these are rational numbers except ________. (a) 0.5 (b) √9 (c) 22/7 (d) √5
11. If 3 men can dig a trench in 6 hours, how long will 9 men take to dig the same trench? (a) 2 hours (b) 3 hours (c) 18 hours (d) 9 hours
12. An example of a perfect square trinomial is ________. (a) x^2 + 2x + 1 (b) x^2 + x + 1 (c) x^2 + 4x + 1 (d) x^2 + 2x + 2
13. The area of a circle with radius 7 cm (using π = 22/