Mathematics JSS 2 First Term Lesson Notes

Week 12 Examination Mathematics JSS 2 First Term Lesson Notes

SUBJECT: MATHEMATICS

Section A: Multiple Choice Questions

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 dig 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 x² = 16, 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) 3/4
    b) 3/5
    c) 3/6
11. 10510 in binary is ____
    a) 111011
    b) 1101001
    c) 0011101
12. One quarter of the positive difference between 29 and 11 is _____
    a) ½
    b) 4 ½
    c) 3 2/3
13. The HCF of 6xy and 18x² 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 coefficient of x² in 3x² 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 9/25 is ______
    a) 3/5
    b) 81/225
    c) 3/25
21. Express 1/16 in standard form
    a) 6.25 x 10¹
    b) 6.25 x 10⁻¹
    c) 6.25 x 10⁻²
22. Simplify 5/6 x 4 2/3 ÷ 2 7/9
    a) 2 ½
    b) 1 2/5
    c) 2/7
23. Express 15 meters as a percentage of 5 kilometers
    a) 3%
    b) 0.3%
    c) 0.03%
24. Find the square root of 3 6/25
    a) 3.234
    b) 1.24
    c) 9/5
25. Simplify (1/4)²
    a) 1/16
    b) 1/8
    c) 2
26. Round off 0.995 to the nearest hundredth
    a) 0.95
    b) 0.94
    c) 1.00
27. Simplify 8 x 10⁹ divided by 4 x 10⁶
    a) 809/406
    b) 4 x 10¹⁵
    c) 4 x 10³
28. Simplify -3 + (-3) – (-11)
    a) 17
    b) -17
    c) 5
29. Simplify (-2) x (-12)
    a) 24
    b) -24
    c) 5/6
30. What is the coefficient of ‘y’ in the expansion of (6 + y)(3 – y)?
    a) 3
    b) 6
    c) -3
31. Express 85 as a binary number
    a) 1110101
    b) 1010101
    c) 1110110
32. 111011₂ + 1111₂ =
    a) 1001010
    b) 1110110
    c) 1001110

Section B: Problem Solving

1. Find the value of the following expressions when x = 4, y = -5, and z = -3:
   • (i) 2x + y – z
   • (ii) x² + 3y – z
   • (iii) x(y – z)
   • (iv) (x + y) / z
2. Simplify these expressions:
   • (i) 3(6a + 3b) + 5(2a – b)
   • (ii) 2(3x – y) – 3(2x – 3y)
3. Seven workers dig 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 long 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
   • (i) Place the data in a frequency table
   • (ii) Draw a bar chart to show the result in the table
   • (iii) How many students took the test?
   • (iv) What was the highest grade?
   • (v) What was the lowest grade?

Instructions

1. Read all questions carefully.
2. Use the provided space to write your answers.
3. Check your work before submitting the paper.