JSS 2 Mathematics Second Term Revision

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SUBJECT: MATHEMATICS CLASS: JSS TWO TIME: 2HRS

OBJECTIVES

1. Which of these is not a prime number (a) 2 (b) 5 (c) 7 ( d) 1
2. Express 360000 in standard form (a) 3.6 x 10⁵ (b) 3.6 x 10⁶ (c) 3.6 x 10³ ( d) 3.6 x 10⁴
3. Express 0.000045 in standard form (a) 4.5 x 10^-2 (b) 4.5 x 10³ (c) 4.5 x 10^-5 (d) 4.5 x 10^-6
4. Which of these is not a factor of 42 (a) 9 (b) 6 (c) 7 (d) 2
5. Express 50 is product of its prime factor (a) 2 x 5² (b) 2 x 5 (c) 2² x 5² (d) 2 x 5
6. The lowest common multiple of 4, 6 and 8 is (a) 24 (b) 48 (c) 12 (d) 40
7. Find the smallest number by which 72 must be multiplied so that its products will give a perfect square (a) 3 (b) 2 (c) 1 (d) 5
8. The lowest common multiple of 4, 6 and 8 is (a) 24 (b) 48 (c) 12 (d) 40
9. The H.C.F. of 8, 24 and 36 is ___ (a) 6 (b) 4 (c) 18 (d) 20
10. The L.C.M. of 12, 16 and 24 is ___ (a) 96 (b) 48 (c) 108 (d) 24
11. 5 men build in 10 days, how long would it take 25 men?

(a) 3 days (b) 2 days (c) 5 days (d) 10 days

1. A girl buys 7 pens for N 210. How would ten pens cost? (a)#300(b)#30(c)#3(d)#200
2. Fill in the gap in m: a =16:24 (a) 10 (b) 12 (c) 4 (d) 6
3. Express 90km /hr: 120km /hr as simple as possible (a) 4:3 (b) 3:4 (c) 2:3 (d) 3:2
4. A factory makes N 2000 pencils in 10 days, Find its production rate of pencils per day (a) N 20 per day (b) N 100 per day(c) N 50 per day (d) N 200 per day
5. Calculate the simple interest on N 200 in 2 years at 4% per annum (a) N 160n (b) N 240 (c) N 16 (d) N 260
6. Calculate the simple interest on N 20,000 for 2^1/2 years at 2% per annum (a) N 10 (b) N10, 000 (c) N 1000 (d) N 2000
7. Find the simple interest on N 40,000 for 1 year at 5% per annum (a) N 100 (b) N 250 (c) N 2,590 (d) N 50
8. What is 0.003867 to 3 significant figure (a)0.004 (b)0.00386 (c)0.00387 (d)386
9. The square root of 121/2 is ____(a)1 3/4 (b)3 1/2 (c)3 3/4 (d)6 1/4

THEORY

INSTRUCTION: Answer Five (5) questions

1. Solve the following (a) 4 (x + 2) = 2 (3x – 1) (b) 19y -2 (6y + 1) = 8

2. Solve the following:

(a) 5e – 1 – 7e + 4 = 0

4 8

3a. Simplify 5 – 2

4a 3b.

b. Simplify 2a + 3b + 9 – 4b

7 6.

4. Factorize the following:

a. 2abx + 7acx (b) 3d²e + 15d²

5a. Simplify (-2) + (-7) using number lines.

Simplify b) 7 x (-6.2). c) -112 ÷ -4

6a. Find the square root of 1296

b. What is 0.046783 to 3 significant figure

c. 45.34672 to 2 d.p. is ______