Mathematics Second Term Examination Primary 4

Comprehensive Revision Exercise for Primary 4 Mathematics

Part A: Review and Revision (20 FAQs with answers)

1. What is multiplication?
   • It is the process of adding a number to itself several times.
     Example: 3 × 4 means 3 added 4 times (3 + 3 + 3 + 3).
2. What is the square of a number?
   • The square of a number is that number multiplied by itself.
     Example: The square of 4 is 4 × 4 = 16.
3. What is the square root of a number?
   • It is the number that, when multiplied by itself, gives the original number.
     Example: The square root of 16 is 4, because 4 × 4 = 16.
4. What are factors?
   • Factors are numbers that divide exactly into another number.
     Example: The factors of 12 are 1, 2, 3, 4, 6, 12.
5. What is the LCM (Least Common Multiple)?
   • The LCM is the smallest number that is a multiple of two or more numbers.
     Example: The LCM of 4 and 6 is 12.
6. What is the HCF (Highest Common Factor)?
   • The HCF is the largest number that divides two or more numbers exactly.
     Example: The HCF of 12 and 18 is 6.
7. How do you divide a number by 10?
   • To divide by 10, move the decimal point one place to the left.
     Example: 50 ÷ 10 = 5.
8. What is a prime number?
   • A prime number is a number greater than 1 that can only be divided by 1 and itself.
     Example: 5 is a prime number.
9. What are multiples?
   • Multiples are numbers that result from multiplying a number by whole numbers.
     Example: The multiples of 3 are 3, 6, 9, 12, etc.
10. What is a rectangle?
    • A rectangle is a shape with four sides and opposite sides equal.
      Example: A door is shaped like a rectangle.
11. What is a pattern?
    • A pattern is a repeated design or sequence.
      Example: 2, 4, 6, 8 is a pattern where the number increases by 2.
12. How do you subtract numbers?
    • To subtract, you take away one number from another.
      Example: 7 – 3 = 4.
13. What is addition?
    • Addition is when you put two or more numbers together.
      Example: 3 + 4 = 7.
14. What is a fraction?
    • A fraction shows a part of a whole.
      Example: 1/2 means one part out of two equal parts.
15. What is money?
    • Money is used to buy things.
      Example: N100 can buy a book.
16. What is time?
    • Time is used to measure hours, minutes, and seconds.
      Example: 60 minutes make 1 hour.
17. What is a graph?
    • A graph is a way to show information using lines or bars.
      Example: A bar graph shows how many apples, oranges, and bananas were sold.
18. What is estimation?
    • Estimation is finding an approximate value.
      Example: Estimating 50 + 60 gives about 100.
19. How do you find the total cost of two items?
    • Add the prices together.
      Example: N150 + N200 = N350.
20. How do you find the area of a rectangle?
    • Multiply the length by the width.
      Example: If the length is 5 cm and the width is 3 cm, the area is 5 × 3 = 15 cm².

Part B: Objective Questions (20 Fill-in-the-Blank Questions)

1. The product of 5 and 8 is ________. (a) 40 (b) 45 (c) 50 (d) 30
2. The square of 9 is ________. (a) 81 (b) 72 (c) 91 (d) 80
3. The square root of 64 is ________. (a) 7 (b) 8 (c) 9 (d) 10
4. The factors of 15 are ________. (a) 1, 2, 5, 15 (b) 1, 3, 5, 15 (c) 1, 2, 3, 15 (d) 1, 4, 5, 15
5. The LCM of 4 and 6 is ________. (a) 12 (b) 18 (c) 20 (d) 24
6. The HCF of 20 and 30 is ________. (a) 10 (b) 5 (c) 15 (d) 20
7. The next multiple of 7 after 35 is ________. (a) 42 (b) 43 (c) 50 (d) 56
8. 72 ÷ 9 = ________. (a) 8 (b) 9 (c) 10 (d) 7
9. 100 ÷ 10 = ________. (a) 10 (b) 20 (c) 15 (d) 5
10. 15 × 5 = ________. (a) 75 (b) 60 (c) 55 (d) 45
11. The sum of 25 and 30 is ________. (a) 55 (b) 50 (c) 45 (d) 35
12. The value of 50 – 20 is ________. (a) 20 (b) 25 (c) 30 (d) 35
13. 7 × 7 = ________. (a) 49 (b) 56 (c) 35 (d) 56
14. A triangle has ________ sides. (a) 2 (b) 4 (c) 3 (d) 5
15. 10, 20, 30 are ________ of 10. (a) factors (b) multiples (c) squares (d) roots
16. The prime factors of 18 are ________. (a) 2 × 3 × 3 (b) 3 × 3 (c) 2 × 9 (d) 2 × 18
17. The perimeter of a rectangle is found by adding the lengths of all the ________. (a) sides (b) corners (c) angles (d) diagonals
18. A bag of rice costs N500. If Ngozi has N1000, she can buy ________ bags. (a) 1 (b) 2 (c) 3 (d) 4
19. 1000 ÷ 100 = ________. (a) 10 (b) 100 (c) 1000 (d) 20
20. The area of a square with side 4 cm is ________ cm². (a) 16 (b) 12 (c) 8 (d) 4

Part C: Theory Questions (20 Short Answer Questions)

1. How do you multiply 3 and 6? Explain simply.
2. What is the square of 7? Show the working.
3. How do you divide 24 by 8? Write the steps.
4. Explain how to find the LCM of 6 and 9.
5. What are the factors of 12? List them.
6. How do you calculate the area of a rectangle?
7. What is a prime number? Give an example.
8. How do you subtract 12 from 20?
9. How do you add 25 and 35? Show the working.
10. If a rectangle has a length of 6 cm and a width of 4 cm, what is its area?
11. What are multiples of 5? List the first five.
12. Explain the difference between a factor and a multiple.
13. How do you find the perimeter of a square?
14. How do you estimate 56 + 45 to the nearest ten?
15. Explain how you would divide 40 by 5.
16. What does it mean when a number is divisible by 3?
17. How would you find the square root of 100?
18. If 5 notebooks cost N50, how much would 3 notebooks cost?
19. How do you calculate the HCF of 18 and 24?
20. If a dress costs N200 and Ngozi has N500, how much change will she get?

Part D: True or False Questions (20)

1. A factor of 12 is 15. (True/False)
2. The square root of 25 is 5. (True/False)
3. 30 is a prime number. (True/False)
4. 2 × 3 = 6 is an example of multiplication. (True/False)
5. The LCM of 10 and 15 is 30. (True/False)
6. The square of 10 is 100. (True/False)
7. A multiple of 4 is 9. (True/False)
8. 100 ÷ 10 = 10. (True/False)
9. A prime number has only two factors: 1 and itself. (True/False)
10. The perimeter of a square is the sum of all four sides. (True/False)
11. 50 + 25 = 75 is an example of addition. (True/False)
12. The area of a rectangle is length × width. (True/False)
13. The sum of 12 and 8 is 20. (True/False)
14. 15 × 3 = 45 is an example of multiplication. (True/False)
15. The HCF of 18 and 30 is 12. (True/False)
16. The square of 6 is 36. (True/False)
17. 9 is divisible by 3. (True/False)
18. A factor of 20 is 5. (True/False)
19. 72 ÷ 9 = 8 is true. (True/False)
20. A triangle has four sides. (True/False)

Part E: Fill-in-the-Gaps Questions (20)

1. The product of 7 and 8 is ________.
2. The square of 3 is ________.
3. The LCM of 2 and 5 is ________.
4. 36 ÷ 6 = ________.
5. A prime number is only divisible by ________ and ________.
6. The factors of 10 are ________.
7. 12 + 18 = ________.
8. The square root of 81 is ________.
9. The area of a square with side 4 cm is ________ cm².
10. The sum of 20 and 30 is ________.
11. The perimeter of a rectangle with length 6 cm and width 3 cm is ________ cm.
12. 15 × 2 = ________.
13. 48 ÷ 8 = ________.
14. The HCF of 36 and 54 is ________.
15. A bag of rice costs ________ Naira.
16. The LCM of 3, 5, and 7 is ________.
17. The square of 10 is ________.
18. 20 ÷ 4 = ________.
19. The sum of 25 and 40 is ________.
20. 9 is a ________ number. (prime/composite)

This revision exercise will help the students revise key concepts in a structured and manageable way, ensuring that they can confidently tackle their exams