Understanding Negative Numbers, Integers, and Positive Numbers Primary 5 Mathematics

Negative Numbers

  • Definition: Negative numbers are numbers less than zero.
  • Example: -1, -5, -10
  • Uses: They show temperatures below zero or debts (money owed).
  • Visual: Think of a number line with zero in the middle. Negative numbers are on the left side of zero.
    • For example, -3 means 3 steps to the left of 0.

2. Integers

  • Definition: Integers are all whole numbers. This includes negative numbers, zero, and positive numbers.
  • Example: -3, -2, -1, 0, 1, 2, 3
  • Tip: If you can write the number without a fraction or decimal, it is an integer.
  • Visual: On a number line, integers are all the dots you see, both on the left and right of zero.

3. Positive Numbers

  • Definition: Positive numbers are numbers greater than zero.
  • Example: 1, 5, 10
  • Uses: They show quantities you have, like 5 apples or 10 pencils.
  • Visual: On a number line, positive numbers are on the right side of zero.
    • For example, +4 means 4 steps to the right of 0.

Summary

  • Negative Numbers: Left of zero (e.g., -4).
  • Integers: All whole numbers (e.g., -2, 0, 3).
  • Positive Numbers: Right of zero (e.g., +7).

Remember, the number line helps you see where numbers belong! 🟢

Evaluation

  1. A number less than zero is called a ______. a) Positive number b) Zero c) Negative number d) Fraction
  2. -5 is an example of a ______ number. a) Positive b) Zero c) Negative d) Fraction
  3. The number 0 is an example of an ______. a) Negative number b) Integer c) Positive number d) Fraction
  4. Which number is a positive number? a) -3 b) -1 c) 0 d) 4
  5. 7 is a ______ number. a) Negative b) Positive c) Zero d) Fraction
  6. -10 is located on the ______ side of zero on the number line. a) Left b) Right c) Middle d) Top
  7. 3 steps to the right of zero is ______. a) -3 b) 0 c) 3 d) 6
  8. ______ is an example of an integer. a) -8 b) 0 c) 5 d) All of the above
  9. Which of these is NOT a positive number? a) 9 b) -2 c) 1 d) 7
  10. On a number line, positive numbers are on the ______ side of zero. a) Left b) Right c) Below d) Top
  11. -4 is an example of a ______ number. a) Positive b) Fraction c) Negative d) Zero
  12. The number line has ______ in the middle. a) -1 b) 1 c) 0 d) 5
  13. Which number is an integer? a) 2.5 b) -1 c) 1/2 d) 3.7
  14. Numbers that are greater than zero are called ______ numbers. a) Negative b) Positive c) Zero d) Even
  15. The opposite of -6 on the number line is ______. a) -6 b) 0 c) 6 d) -1

Understanding Equations, Number Lines, and Solving Simple Algebraic Equations in Word Problems

Primary 5 pupils understand negative numbers, integers, and positive numbers better:

  1. Q: What are negative numbers?
    • A: Numbers less than zero.
  2. Q: Can you give an example of a negative number?
    • A: Yes, -5 is a negative number.
  3. Q: What are positive numbers?
    • A: Numbers greater than zero.
  4. Q: Can you give an example of a positive number?
    • A: Yes, 3 is a positive number.
  5. Q: What are integers?
    • A: Whole numbers that can be positive, negative, or zero.
  6. Q: Is zero an integer?
    • A: Yes, zero is an integer.
  7. Q: Where are negative numbers on a number line?
    • A: On the left side of zero.
  8. Q: Where are positive numbers on a number line?
    • A: On the right side of zero.
  9. Q: Is -2 greater than 0?
    • A: No, -2 is less than 0.
  10. Q: Is 7 a negative number?
    • A: No, 7 is a positive number.
  11. Q: What is the opposite of -4?
    • A: The opposite of -4 is 4.
  12. Q: Is -8 an integer?
    • A: Yes, -8 is an integer.
  13. Q: What is 3 steps to the right of -2 on a number line?
    • A: 1
  14. Q: Are all whole numbers integers?
    • A: Yes, all whole numbers are integers.
  15. Q: What is the smallest positive integer?
    • A: The smallest positive integer is 1.

Solving Simple Algebra Equations

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