JSS 2 THIRD TERM EXAMINATION MATHEMATICS

SUBJECT: MATHEMATICS

SECTION A

1. The square root of 6400 is _____ (a) 80 (b) 10 (c) 60
2. (+8) + (-2_ = x; find x. (a) +6 (b) -6 (c) +10
3. When x = 2 and y = 3, the value of xy -5y is ______ (a) -9 (b) 18 (c) 48
4. Seven workers dug a piece of ground in 10 days. How long would 5 workers take? (a) 14 days (b) 10 days (c) 7 days
5. 25% of N100 is _____ (a) N25 (b) N225 (c) N100
6. If = 1, then x is =?(a) 4 (b) 6 (c) 9
7. The HCF of 12ab² and 30a²b is (a) 20a²b (b) 6ab (c) 10b²a
8. I subtract 3 from a certain number, multiply the result by 5 and then add 9, the final result is 54, the original number is ____ (a) 10 (b) 12 (c) 6
9. The standard form of 9 000 000 is _____ (a) 9 x 10² (b) 9 x 10⁶ (c) 9 x 10⁹
10. 45 minutes, expressed as a fraction of one hour is _____ (a) (b) (c)
11. 10510 to a binary number is ____ (a) 111011 (b) 1101001 (c) 0011101
12. One quarter of the positive different between 29 and 11 is _____ (a) ½ (b) 4 ½ (c) 3 2/3
13. The HCF of 6xy and 18×2 is (a) 54x (b) 6x (c) 12y
14. The square root of 9b2 is (a) 18b2 (b) 3b (c) 21b
15. If y = (x+9)/(x-3), find the value of y when x = 5. (a) -5 (b) 7 (c) -2
16. The co-efficient of x2 in 3×2 is (a) 3 (b) 6 (c) 3x
17. The product of 3 ¼ and 2 2/5 is (a) 7 4/5 (b)7/5 (c) 4/5
18. Express 7 minutes 30 seconds as a fraction of 1 hour. (a) 1/8 h (b) 2/11 h (c) 7/30 h
19. The LCM of 9 and 12 is _____ (a) 36 (b) 18 (c) 24
20. The square root of 9/25is ______ (a) 3/5 (b) 81/225 (c) 3/25
21. Express 1/16 in standard form (a) 6.25 x 10 (B) 6.25 x 10-1 (C) 6.25 x 10-2 (D) 6.25 x 100
22. Simply 5/6 x 4 2/3 ÷ 2 7/9 (a) 2½ (B) 1 2/5 (C) 2/7 (D) 5/8
23. Express 15 metres as a percentage of 5 kilometres (a)3% (B) 0.3% (C) 0.03% (D) 0.003%
24. Find the square root of 3 6/25 (a) 3.234 (B) 1.24 (C) 9/5 (D) 5/9
25. Simply (1/4)2 (B) 1/16 (C) 1/8 (D) 2
26. 105₁₀ to a binary number is ____ (a) 111011 (b) 1101001 (c) 0011101
27. One quarter of the positive different between 29 and 11 is _____ (a) ½ (b) 4 ½ (c) 3
28. The HCF of 6xy and 18x² is (a) 54x (b) 6x (c) 12y
29. The square root of 9b² is (a) 18b² (b) 3b (c) 21b
30. If y =, find the value of y when x = 5. (a) -5 (b) 7 (c) -2
31. The co-efficient of x² in 3x² is (a) 3 (b) 6 (c) 3x
32. The product of 3 ¼ and 2 is (a) 7 (b) (c)
33. Express 7 minutes 30 seconds as a fraction of 1 hour. (a) h (b) h (c) h
34. The LCM of 9 and 12 is _____ (a) 36 (b) 18 (c) 24
35. The square root of i1 00 s ______ (a)10 (b) 20 (c) 50
36. Express 1/16 in standard form (a) 6.25 x 10 (B) 6.25 x 10^-1 (C) 6.25 x 10^-2 (D) 6.25 x 10⁰
37. Simply 5/6 x 4 ²/₃ ÷ 2 ⁷/_{9  (A)} 2½ (B) 1 ²/₅ (C) 2/7 (D) 5/8
38. Express 15 meters as a percentage of 5 kilometers (a)3% (B) 0.3% (C) 0.03% (D) 0.003%
39. Find the square root of 3 ⁶/_{25 (a)} 3.234 (B) 1.24 (C) 9/5 (D) 5/9
40. Simply (1/4)^{2 (a)} 16 (B) ¹/₁₆ (C) 1/8 (D) 2
41. Round off 0.995 to the nearest hundredth (a) 0.95 (B) 0.94 (C) 1.00 (D) 1.45
42. Simply 8 x 10⁹ divided by 4 x 10^{6 (a)} 80⁹/40⁶ (B) 4 x 10¹⁵ (C) 4 x 10³ (D) 2 x 10³
43. Simplify -3 + (-3) – (-11) (a) 17 (B) -17 (C) 5 (D) -5
44. Simplify (-2) x (-12) (+6)^{2 (a)} 2/3 (B) 3/2 (C) 5/6 (D) -1/7
45. What is the co-efficient of ‘y’ in the expansion of (6+y) ( 3-y)? (a) 3 (B) 6 (C) -3 (D) -6
46. Express 85 as a binary number (a) 1110101₂ (B) 1010101₂ (C) 1110110₂ (D) 1011110₂
47. 111011₂ + 1111₂ = (a) 1001010₂ (B) 1110110₂ (C) 1001110₂ (D) 1111111₂

SECTION B

1. Find the value of this expression, when x = 4, y = -5 and z = -3 (i) (ii) (iii) 2x (iv)
2. Simplify these expressions.3(6a +3b) + 5(2a – b) (ii) 2(3x – y) – 3(2x – 3y)
3. Seven workers dug a piece of ground in 10 days. How long would 5 workers take?
4. A full water tank lasts 50 students for 10 days. For how will the same tank last 125 students?
5. Some students scored these grades in a test C,B,D,A,C,C,E,B,D,F,B,D,E,C.A,C,D,B
   • Place the date in a frequency table
   • Draw a bar chart to show the result in the table.
   • How many students took the test?
   • What was the highest grade?
   • What was the lowest grade?