Online Simple Test
Terms and Conditions
- Duration: 2 hour.
- Total number of questions: 50.
- You must answer all questions.
- Do not close the browser or refresh the page during the test.
- Any form of cheating or misconduct will result in disqualification.
- Read each question carefully before selecting an answer.
1. What is 24 ÷ 6?
A) 3
B) 4
C) 5
D) 6
Explanation: 24 ÷ 6 equals 4.
2. Which number is divisible by both 2 and 3?
A) 11
B) 13
C) 18
D) 22
Explanation: 18 is divisible by both 2 and 3.
3. What is the perimeter of a rectangle with a length of 8 units and a width of 5 units?
A) 20 units
B) 26 units
C) 30 units
D) 18 units
Explanation: Perimeter of a rectangle = 2 × (length + width) = 2 × (8 + 5) = 26 units.
4. What is 7 × 9?
A) 56
B) 53
C) 63
D) 81
Explanation: 7 × 9 equals 63.
5. Which fraction is equivalent to 1/2?
A) 2/4
B) 3/6
C) 5/8
D) 4/5
Explanation: 1/2 is equivalent to 2/4, 3/6, etc.
6. What is the value of 2 × (5 + 3)?
A) 10
B) 18
C) 16
D) 12
Explanation: First, add 5 + 3 to get 8, then multiply by 2 to get 16.
7. What is the greatest common factor of 12 and 18?
A) 6
B) 3
C) 12
D) 9
Explanation: The greatest common factor (GCF) of 12 and 18 is 6.
8. Which is the smallest number?
A) 15
B) 10
C) 20
D) 5
Explanation: 5 is the smallest number among the given choices.
9. What is the sum of 1/4 and 1/2?
A) 3/4
B) 3/4
C) 2/4
D) 5/4
Explanation: 1/4 + 1/2 = 2/4 + 1/4 = 3/4.
10. What is 9 + 12 × 2?
A) 23
B) 33
C) 24
D) 42
Explanation: According to the order of operations, first multiply 12 × 2 = 24, then add 9 to get 33.
11. What is 15 × 6?
A) 90
B) 80
C) 100
D) 75
Explanation: 15 × 6 equals 90.
12. What is 4/5 of 25?
A) 18
B) 20
C) 16
D) 22
Explanation: 4/5 of 25 = (4 × 25) ÷ 5 = 100 ÷ 5 = 20.
13. Which of the following numbers is a multiple of 6?
A) 20
B) 22
C) 18
D) 25
Explanation: 18 is a multiple of 6 (6 × 3 = 18).
14. What is the value of 3(4 + 5)?
A) 27
B) 20
C) 25
D) 30
Explanation: First, solve the expression inside the parentheses (4 + 5 = 9), then multiply by 3 (3 × 9 = 27).
15. What is 3/4 of 16?
A) 8
B) 12
C) 10
D) 14
Explanation: 3/4 of 16 = (3 × 16) ÷ 4 = 48 ÷ 4 = 12.
16. What is the smallest prime number greater than 10?
A) 20
B) 13
C) 11
D) 17
Explanation: The smallest prime number greater than 10 is 11.
17. What is the area of a square with side length 5 units?
A) 20 units²
B) 25 units²
C) 30 units²
D) 15 units²
Explanation: The area of a square is found by multiplying the side length by itself: 5 × 5 = 25 units².
18. What is 2/3 of 12?
A) 6
B) 8
C) 4
D) 10
Explanation: 2/3 of 12 = (2 × 12) ÷ 3 = 24 ÷ 3 = 8.
19. What is the sum of the angles of a triangle?
A) 280°
B) 180°
C) 90°
D) 360°
Explanation: The sum of the angles of a triangle is always 180°.
20. What is the difference between 25 and 9?
A) 20
B) 16
C) 18
D) 14
Explanation: 25 - 9 = 16.
21. What is 4² (4 squared)?
A) 12
B) 8
C) 16
D) 14
Explanation: 4² is 4 × 4 = 16.
22. What is the perimeter of a rectangle with length 6 cm and width 4 cm?
A) 18 cm
B) 20 cm
C) 24 cm
D) 22 cm
Explanation: Perimeter of a rectangle = 2 × (Length + Width) = 2 × (6 + 4) = 2 × 10 = 20 cm.
23. Which number is divisible by both 3 and 4?
A) 13
B) 12
C) 8
D) 7
Explanation: 12 is divisible by both 3 and 4 (12 ÷ 3 = 4, 12 ÷ 4 = 3).
24. What is the value of 2³ (2 cubed)?
A) 8
B) 6
C) 4
D) 10
Explanation: 2³ is 2 × 2 × 2 = 8.
25. What is 7 × 9?
A) 63
B) 72
C) 54
D) 81
Explanation: 7 × 9 = 63.
26. Which of the following is a factor of 24?
A) 5
B) 8
C) 6
D) 7
Explanation: 6 is a factor of 24 (24 ÷ 6 = 4).
27. What is 18 ÷ 3?
A) 7
B) 5
C) 6
D) 9
Explanation: 18 ÷ 3 = 6.
28. What is the largest 2-digit prime number?
A) 93
B) 89
C) 97
D) 91
Explanation: The largest 2-digit prime number is 97.
29. What is 5 × 8 + 2?
A) 24
B) 42
C) 52
D) 38
Explanation: First, multiply 5 × 8 = 40, then add 2: 40 + 2 = 42.
30. What is the sum of the angles in a hexagon?
A) 360°
B) 540°
C) 720°
D) 1080°
Explanation: The sum of the interior angles of a hexagon is 720°.
31. What is the value of 9 × (6 ÷ 3)?
A) 81
B) 18
C) 27
D) 21
Explanation: First, divide 6 ÷ 3 = 2, then multiply 9 × 2 = 18.
32. What is the sum of the first 5 prime numbers?
A) 28
B) 30
C) 28
D) 33
Explanation: The first 5 prime numbers are 2, 3, 5, 7, 11. Their sum is 2 + 3 + 5 + 7 + 11 = 28.
33. If a triangle has one angle of 90°, what is the sum of the other two angles?
A) 170°
B) 90°
C) 120°
D) 100°
Explanation: The sum of all angles in a triangle is 180°. If one angle is 90°, the sum of the other two angles must be 180° - 90° = 90°.
34. What is the area of a rectangle with a length of 8 cm and a width of 3 cm?
A) 24 cm²
B) 32 cm²
C) 20 cm²
D) 18 cm²
Explanation: Area of a rectangle = length × width = 8 × 3 = 24 cm².
35. What is 25% of 80?
A) 10
B) 20
C) 25
D) 15
Explanation: 25% of 80 is (25 ÷ 100) × 80 = 20.
36. What is the perimeter of a square with sides of 6 cm?
A) 12 cm
B) 24 cm
C) 18 cm
D) 30 cm
Explanation: Perimeter of a square = 4 × side = 4 × 6 = 24 cm.
37. If you multiply 0.6 by 10, what is the result?
A) 6
B) 60
C) 0.06
D) 0.6
Explanation: 0.6 × 10 = 6.
38. What is the smallest multiple of 5 that is greater than 30?
A) 31
B) 40
C) 35
D) 30
Explanation: The smallest multiple of 5 greater than 30 is 35 (5 × 7 = 35).
39. What is the greatest common factor (GCF) of 12 and 18?
A) 4
B) 6
C) 12
D) 3
Explanation: The greatest common factor (GCF) of 12 and 18 is 6.
40. What is the total of 9.5 + 3.8?
A) 13.5
B) 13.3
C) 13.2
D) 14.3
Explanation: 9.5 + 3.8 = 13.3.
41. What is the value of 15 ÷ 5 × 3?
A) 6
B) 9
C) 8
D) 12
Explanation: First, divide 15 ÷ 5 = 3, then multiply 3 × 3 = 9.
42. What is 1/2 of 60?
A) 30
B) 25
C) 15
D) 20
Explanation: 1/2 of 60 is 60 ÷ 2 = 30.
43. Which of the following numbers is divisible by 3?
A) 14
B) 15
C) 17
D) 19
Explanation: 15 is divisible by 3 (15 ÷ 3 = 5).
44. What is the perimeter of a rectangle with a length of 7 cm and width of 5 cm?
A) 24 cm
B) 30 cm
C) 35 cm
D) 28 cm
Explanation: Perimeter = 2 × (length + width) = 2 × (7 + 5) = 24 cm.
45. Which fraction is equivalent to 2/4?
A) 4/8
B) 3/4
C) 1/2
D) 5/6
Explanation: 2/4 is equivalent to 1/2.
46. What is the area of a triangle with a base of 6 cm and a height of 8 cm?
A) 24 cm²
B) 48 cm²
C) 18 cm²
D) 30 cm²
Explanation: Area of a triangle = 1/2 × base × height = 1/2 × 6 × 8 = 24 cm².
47. What is 12 × 6 ÷ 2?
A) 136
B) 49
C) 42
D) 36
Explanation: First, multiply 12 × 6 = 72, then divide 72 ÷ 2 = 36.
48. What is the value of 3/5 + 2/5?
A) 1/5
B) 5/5
C) 2/5
D) 3/5
Explanation: 3/5 + 2/5 = 5/5 = 1.
49. What is the missing number in the pattern 4, 8, 12, __, 20?
A) 16
B) 14
C) 15
D) 18
Explanation: The pattern increases by 4, so the missing number is 16.
50. What is the total cost if 5 books are priced at $3 each?
A) $15
B) $12
C) $10
D) $16
Explanation: Total cost = 5 × $3 = $15.
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Mathematics -Grade O4