First Term Examination
Class : JSS 2
Subject : Mathematics
Duration : 1 Hour 30 minutes
Instruction: Choose the correct answer from the options provided for each question.
1. Express 0.000725 in standard form. (a) 7.25 × 10^-4 (b) 7.25 × 10^4 (c) 7.25 × 10^3 (d) 72.5 × 10^-4
2. Round off 7385 to the nearest tens. (a) 7000 (b) 7400 (c) 7390 (d) 7380
3. What is 25% of #400? (a) #320 (b) #1000 (c) #100 (d) #16
4. A number is multiplied by 6 and then 4 is added. The result is 34. Find the first number. (a) 8 (b) 10 (c) 6 (d) 5
5. Calculate 3^3 × 2^3 . (a) 6 (b) 54 (c) 216 (d) 200
6. Calculate (0.2)^2. (a) 0.2 (b) 0.3 (c) 0.06 (d) 0.04
7. What is the square root of 16 × 25? (a) 20 (b) 25 (c) 16 (d) 15
8. Find the HCF of 8,12 and 16. (a) 2 (b) 6 (c) 4 (d) 8
9. Change 2/3 to decimal. (a) 6.666 (b) 0.6666 (c) 0.766 (d) 0.666600
10. Express 40% as a fraction in its simplest form (a) 4/10 (b) 4/5 (c) 2/5 (d) 1/5
11. Find q × q × q × q × r × p × p in index form. (a) q^4 × r^2 × p^2 (b) q^2rp^6 (c) q^4rp^2 (d) qrp^4
12. Express 0. 56 as a percentage. (a) 0.56% (b) 5.6% (c) 56% (d) 5600%
13. Find 30% of #2700. (a) 800 (b) 840 (c) 810 (d) 3027
14. Express 5 : 1 1/2 in its simplest form. (a) 20 : 6 (b) 10 : 3 (c) 5 : 3 (d) 10 : 6
15. Round off 394.672 correct to 2 s. f. (a) 394.62 (b) 394 (c) 390 (d) 394.7
16. The first prime numbers are ______________. (a) 3, 5, 7 (b) 1, 3, 5 (c) 2, 3, 5 (d) 3, 5, 7
17. These numbers are square numbers except _______. (a) 28 (b) 16 (c) 196 (d) 81
18. Simplify 9/ 81 to its simplest form (a) 1/2 (b) 1/9 (c) 1/3 (d) 2/3
19. Find the LCM of 12, 16 and 20. (a) 48 (b) 120 (c) 240 (d) 60
20. Express 0.009 as a percentage. (a) 0.009% (b) 0.9% (c) 0.09% (d) 9%
21. Express 14 : 21 in its simplest form. (a) 2 : 3 (b) 3 : 2 (c) 7 : 7 (d) 4 : 5
22. Find the value (-75) ÷ (-5). (a) – 15 (b) 25 (c) 15 (d) – 25
23. Simplify : 5x + (8x – 5x). (a) 18x (b) 10x (c) 8x (d) 13x
24. Simplify: 6y^4 ÷ 3y^2. (a) 2y (b) 3y^2 (c) 4y^2 (d) 3y^4
25. Solve for x in the following equation: 3x + 12 = 6x + 3 (a) 2 (b) 4 (c) 8 (d) 3
26. A basket contains 400 oranges, 40 are bad. How many good oranges are in the basket? (a) 440 (b) 400 (c) 360 (d) 300
27. These are types of polygon except ________. (a) circle (b) hexagon (c) pentagon (d) triangle
28. A right angle triangle has one of its angle equal (a) 360° (b) 64° (c) 90° (d) 180°
29. Find the value of (-3) × (-3) × (-4) × (-1) (a) – 36 (b) +36 (c) – 35 (d) -34
30. Simplify: 5a × 3a^2 × 2a^3. (a) 30a (b) 30a^6 (c) 15a^6 (d) 30a^5
Section B : Theory
Instruction : Answer any three questions from this section.
1. Find the prime factors of 128 using divided repeatedly by prime number.
1b. Find the first seven multiples of 9.
2a. Find the L. C. M of 60, 80 and 100.
2b. Find the H. C. F of 16, 20 and 24.
2c. Find the factors of 24 and state which of the factors are odd numbers.
3a. Simplify: (+4) × (+3) × (-1) = (- 1) × (+3)
3b. Simplify: (-4) × (-3) × (-5)
4a. Express 4/5 as a percentage
4b. Express 45% as a fraction in its lowest term.
4c. Round off 73.485 to the nearest tenth.
4d. Express 0.000734 in standard form.
5a. Solve: 68/81 ÷ 1/9
5b. 25/9 × 81/25
6. Simplify the following:
(a) 4[3x + 4x] = 32
(b) 3(2x + 2)/ 4 + 2(3x + 1)/ 4