Examination on General Mathematics
Class: JSS 1
Term: First Term
Time: 1 Hour
Total Marks: 70

SECTION A: OBJECTIVES (40 Marks)
Instruction: Answer all questions.

1. ________ is the value of a digit based on its position in a number. (a) Face value (b) Place value (c) Total value (d) Original value
2. Which of these is not a prime number? (a) 2 (b) 3 (c) 4 (d) 5
3. All of these are basic operations in mathematics except ________. (a) addition (b) subtraction (c) comparison (d) multiplication
4. The numeral L in Roman system represents ________. (a) 5 (b) 50 (c) 500 (d) 1000
5. Which of the following numbers is written in words as ‘Five hundred and twenty-three million, six hundred thousand’? (a) 523,600,000 (b) 523,000,600 (c) 523,000,000,600 (d) 52,360,000
6. The main reason for reducing a fraction to its lowest terms is ________. (a) to make it larger (b) to simplify it (c) to convert it to decimal (d) to find its equivalent
7. An example of a composite number is ________. (a) 7 (b) 11 (c) 13 (d) 15
8. Which of these is NOT a step in converting a fraction to a decimal? (a) Divide numerator by denominator (b) Multiply by 100 (c) Add a decimal point (d) Place a zero before the decimal point if necessary
9. The correct step in converting 0.25 to a percentage is ________. (a) divide by 100 (b) multiply by 100 (c) add 100 (d) subtract 100
10. What is the place value of the digit 7 in the number 2,745,100? (a) Thousands (b) Ten Thousands (c) Hundred Thousands (d) Millions
11. Express 3/5 as a decimal. (a) 0.3 (b) 0.5 (c) 0.6 (d) 0.75
12. Find the sum of 12,345 and 6,789. (a) 19,134 (b) 18,134 (c) 19,034 (d) 18,034
13. Which fraction is equivalent to 2/3? (a) 4/5 (b) 6/9 (c) 8/10 (d) 10/12
14. The product of 25 and 15 is ________. (a) 350 (b) 375 (c) 400 (d) 425
15. What is the value of (1011) base 2 in base 10? (a) 9 (b) 10 (c) 11 (d) 12
16. Convert 40% to a fraction in its lowest terms. (a) 1/4 (b) 2/5 (c) 4/10 (d) 2/3
17. The highest common factor (HCF) of 12 and 18 is ________. (a) 2 (b) 3 (c) 6 (d) 9
18. When estimating the length of a classroom, a suitable unit would be ________. (a) grams (b) litres (c) metres (d) kilograms
19. Which of the following is an example of a common multiple of 4 and 6? (a) 8 (b) 12 (c) 16 (d) 20
20. Subtract 567 from 1000. (a) 433 (b) 533 (c) 333 (d) 443
21. Write 101 base 2 + 11 base 2 in base 2. (a) 110 base 2 (b) 1000 base 2 (c) 1100 base 2 (d) 1010 base 2
22. Round 3,456 to the nearest hundred. (a) 3,400 (b) 3,000 (c) 3,500 (d) 4,000
23. The Roman numeral for 9 is ________. (a) IX (b) XI (c) VIIII (d) VX
24. Which of these numbers is divisible by both 2 and 3? (a) 14 (b) 20 (c) 24 (d) 35
25. Arrange the fractions 1/2, 1/4, 3/4 in ascending order. (a) 1/2, 1/4, 3/4 (b) 1/4, 1/2, 3/4 (c) 3/4, 1/2, 1/4 (d) 1/4, 3/4, 1/2
26. If a book costs N500, an estimated price could be ________. (a) N490 (b) N505 (c) N500 (d) N510
27. Convert 0.75 to a percentage. (a) 7.5% (b) 75% (c) 0.75% (d) 750%
28. What is the smallest prime number? (a) 0 (b) 1 (c) 2 (d) 3
29. The difference between 5,000 and 2,345 is ________. (a) 2,655 (b) 3,655 (c) 2,755 (d) 3,755
30. Express 12 as a product of its prime factors in index form. (a) 2 x 6 (b) 3 x 4 (c) 2^2 x 3 (d) 2 x 3^2
31. How many digits are used in the binary system? (a) One (b) Two (c) Ten (d) Infinite
32. Which of these is an equivalent fraction of 1/3? (a) 2/4 (b) 3/6 (c) 4/12 (d) 5/10
33. A number written as 1,234,567,890 is in the ________. (a) millions (b) billions (c) trillions (d) thousands
34. The LCM of 6 and 9 is ________. (a) 3 (b) 18 (c) 36 (d) 54
35. What is the result of 110 base 2 x 10 base 2? (a) 1100 base 2 (b) 1000 base 2 (c) 1010 base 2 (d) 1110 base 2
36. If 1/5 of a class are boys, what percentage are boys? (a) 10% (b) 20% (c) 25% (d) 50%
37. Estimate the number of students in a primary school if there are 25 classes with about 30 students each. (a) 500 (b) 600 (c) 750 (d) 1000
38. Which of these numbers is a factor of 30? (a) 4 (b) 7 (c) 10 (d) 25
39. The value of M in Roman numerals is ________. (a) 100 (b) 500 (c) 1000 (d) 5000
40. Convert 13 base 10 to base 2. (a) 1101 base 2 (b) 1011 base 2 (c) 1110 base 2 (d) 1001 base 2

SECTION B: THEORY (30 Marks)
Instruction: Answer any THREE questions.

Question 1
(a) Write 7,345,000,000 in words. (2 marks)
(b) Calculate: 12,567 + 8,903 – 4,120. (3 marks)
(c) Estimate the product of 48 and 21 to the nearest ten. (3 marks)
(d) Convert 49 to Roman numerals. (2 marks)

Question 2
(a) Reduce the fraction 48/60 to its lowest terms. (2 marks)
(b) Arrange the following fractions in descending order: 2/3, 5/6, 1/2. (3 marks)
(c) Convert 0.65 to a percentage and to a fraction in its lowest terms. (3 marks)
(d) Express 1/8 as a decimal. (2 marks)

Question 3
(a) List all the prime numbers between 20 and 30. (2 marks)
(b) Find the HCF of 24, 36, and 48. (3 marks)
(c) Calculate the LCM of 15 and 25 using the prime factor method. (3 marks)
(d) Convert 27 base 10 to base 2. (2 marks)

Question 4
(a) Perform the following operation in base 2: 111 base 2 + 101 base 2. (2 marks)
(b) Perform the following operation in base 2: 1101 base 2 – 111 base 2. (3 marks)
(c) A shopkeeper bought an item for N800 and wants to sell it at a 25% profit. Estimate the selling price. (3 marks)
(d) Estimate the capacity of a standard water bottle in litres. (2 marks)

Objective Marking Scheme
Question 1 – ✅ (b) Place value
Question 2 – ✅ (c) 4
Question 3 – ✅ (c) comparison
Question 4 – ✅ (b) 50
Question 5 – ✅ (a) 523,600,000
Question 6 – ✅ (b) to simplify it
Question 7 – ✅ (d) 15
Question 8 – ✅ (b) Multiply by 100
Question 9 – ✅ (b) multiply by 100
Question 10 – ✅ (c) Hundred Thousands
Question 11 – ✅ (c) 0.6
Question 12 – ✅ (a) 19,134
Question 13 – ✅ (b) 6/9
Question 14 – ✅ (b) 375
Question 15 – ✅ (c) 11
Question 16 – ✅ (b) 2/5
Question 17 – ✅ (c) 6
Question 18 – ✅ (c) metres
Question 19 – ✅ (b) 12
Question 20 – ✅ (a) 433
Question 21 – ✅ (b) 1000 base 2
Question 22 – ✅ (c) 3,500
Question 23 – ✅ (a) IX
Question 24 – ✅ (c) 24
Question 25 – ✅ (b) 1/4, 1/2, 3/4
Question 26 – ✅ (c) N500
Question 27 – ✅ (b) 75%
Question 28 – ✅ (c) 2
Question 29 – ✅ (a) 2,655
Question 30 – ✅ (c) 2^2 x 3
Question 31 – ✅ (b) Two
Question 32 – ✅ (c) 4/12
Question 33 – ✅ (b) billions
Question 34 – ✅ (b) 18
Question 35 – ✅ (a) 1100 base 2
Question 36 – ✅ (b) 20%
Question 37 – ✅ (c) 750
Question 38 – ✅ (c) 10
Question 39 – ✅ (c) 1000
Question 40 – ✅ (a) 1101 base 2