First Term Examination
Class: JSS 2
Subject : Mathematics
Duration: 2 Hours
Name: ___________________________________
SECTION A : OBJECTIVE TESTS
INSTRUCTION: Attempt all questions.
1. Express 90 as a product of its prime factors. (a) 2x3x3x5 (b) 2x2x3x3 (c) 2x9x5 (d) 2x2x3x5
2. Express 9.4×10^-4 in ordinary form. (a) 0.00094 (b) 0.0094 (c) 0.000094 (d) 0.094
3. Simplify: – 5a^2/ 15a. (a) – a/ 3 (b) a/3 (c) – a/5 (d) a/5
4. Express 8.4x 10^3 in ordinary form. (a) 840 (b) 84000 (c) 8400 (d) 0.840
5. The HCF of 10a^2b and 8ab is _____________. (a) 10a^2b (b) 2ab (c) 8ab (d) 4ab
6. Express in standard form: 720000000. (a) 7.2×10^8 (b) 7.2×10 (c) 7.2x 10^4 7.2×10^-7
7. Change 12/ 25 to decimal fraction. (a) 0.24 (b) 0.48 (c) 0.1 (d) 0.12
8. Express 108 /180 as a fraction in its lowest term. (a) 1/5 (b) 2/5 (c) 3/5 (d) 1/4
9. Expand 4(2a + 2b). __________ (a) 12a + 8b (b) 4a + 4b (c) 8a + 8b (d) 4ab + 4ab
10. Express 100 as a product of its prime factors.. Leave your answer in index form. (a) 10 x 12 (b) 5^2 x 5^2 (c) 2^2 x 5^2 (d) 2 x 50
11. Approximate 9852 to 1 significant figure. (a) 10000 (b) 9000 (c) 9850 (d) 9800
12. Find the simple interest #14000 for 7 1/2 years at 5% per annum. (a) #2250 (b) 5250 (c) #7250 (d) #10250
13. What was Nkiru’s age 10 years ago if her present age is 23 years? (a) 33 yrs (b) 43 yrs (c) 13 yrs (d) 23 yrs
14. Solve the equation : 8 = 4x + 10. (a) x = 1/2 (b) x = 2 (c) x = -2 (d) x = -1/2
15. ___________ is a number that can be divisible by one and itself. (a) Even number (b) Odd number (c) Prime number (d) Squares
16. Express the ratio of 7 days to 6 weeks as a decimal fraction. (a) 0.17 (b) 1.17 (c) 1.07 (d) 2.17
17. A man paid #225. 00 to purchase a book marked #250. 00. He had #25. 00 as a ________ (a) commission (b) discount (c) loss (d) profit
18. What is 1/ 4 of the H. C. F of 24, 16 and 48? (a) 4 (b) 16 (c) 8 (d) 2
19. Round off the product of 0.025 and 0.3 to 1 significant figure. (a) 0.0007 (b) 0.0075 (c) 0.007 (d) 0.008
20. Find the value of 5f – 2v, if f = 1 and v = 5. (a) -5 (b) – 3 (c) 5 (d) 3
21. Convert 0.025 to common fraction. (a) 1/2 (b) 1/4 (c) 1/25 (d) 3/7
22. Reduce 8/ 120 to fraction in its lowest term. (a) 1/2 (b) 1/3 (c) 2/3 (d) 3/7
23. Find the smallest number by which 200 should be multiplied so that the result is a perfect square. (a) 2 (b) 3 (c) 5 (d) 7
24. Evaluate: 23^2 – 7^2 gives ________________ (a) 460 (b) 529 (c) 480 (d) 580
25. Express 20% as a decimal. (a) 2.00 (b) 0.5 (c) 0.2 (d) 0.02
26. Express 13.47kg to the nearest whole number. (a) 10kg (b) 13kg (c) 13.5kg (d) 14kg
27. If x = 7, then evaluate 6 + x – 2x. (a) – 1 (b) 1 (c) 0 (d) 27
28. If 3565 becomes 3600, which method of approximation is used? _____________________ (a) 1 significant figure (b) 2 significant figure (c) 3 significant figure (d) 4 significant figure
29. Write 243.912 to the nearest whole number. (a) 244 (b) 240 (c) 200 (d) 243
30. The square root of 12 1/4 is ____________ (a) 1 3/4 (b) 3 3/4 (c) 3 1/2 (d) 6 1/4
31. Mr. Ojo made a profit of 32% on an article he bought for $3200.How much did he sell the article? ___________ (a) $1024.00 (b) $1276.00 (c) $4224.00 (d) $4400.00
32. Round off 3.9695 to two decimal places gives _____ (a) 3.96 (b) 3.97 (c) 3.98 (d) 3.95
33. Express 32% as a fraction. (a) 2/25 (b) 4/25 (c) 6/ 25 (d) 8/25
34. Olú saves #700. 00 daily. How much will he save in 15 days? (a) #950 (b) #1050. 00 (c) #1250. 00 (d) #1500. 00
35. If the square root of 4 is 2 , then the square root of 400 would be ________. (a) 20 (b) 2000 (c) 20000 (d) 200
36. The LCM of 5ab^2 and 3a^2b is ___________. (a) ab (b) 5b/3a (c) 15a^2 b^2 (d) 15a^3b^3
37. Calculate simple interest on 6000 naira for 3 years at 12%. (a) #1650. 00 (b) #1550. 00 (c) #1450. 00 (d) #1750. 00
38. Simplify : 4(5) – (+14). (a) +9 (b) +19 (c) – 9 (d) – 19
39. A man bought a generator for 420,000 naira and sold it for 80,000 naira. What is the percentage loss? (a) 25% (b) 40% (c) 50% (d) 32 1/2%
40. A trader buys a gallon of palm oil for #1500 naira and sell it at a profit of 10%
SECTION B : THEORY
Instruction : Answer four questions in all. Question 1 and any other three questions.
1a. The selling price of a machine is #14000. The seller gives 25% discount for cash payment, what is the cash price?
1b. An insurance agents sells #284000 worth of insurance. His commission is 20%. How much does he get as his commission?
2a. Express the following percentages as a fraction in its lowest term:
i. 8 1/2% ii. 16% iii. 45%
2b. A trader buys a kettle for #800 and sells it at a profit of 15%. Find his actual profit and selling price.
3a. Express the following numbers in standard form.
i. 14500000
ii. 2169000000
iii. 0.0001145
3b. Express in ordinary form:
i. 1.07 x 10^3 ii. 1.75 x 10^-3
4a. Find the prime factors of the following numbers in index form:
i. 200. ii. 312
4b. Find the square root of the following numbers using factor method.
i. 324 ii. 256
5a. Correct these numbers to 1s.f, 2s.f, 3s.f and 4s.f:
i. 46. 84665 ii. 0.0465628
5b. Correct these numbers to 1d.p, 2d.p, 3d.p and 4d.p:
i. 15. 3550 ii. 32.32507
6a. Simplify: a^5 x a^-2
6b. Evaluate and correct to the nearest hundredth: (1.215 + 35.0075) x 1.3
6c. Express 3/8 as decimal.
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