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Grade 5 - Mathematics
1.12 Numbers - Prime, Composite, Odd, Even, Multiple, Factors

Even Numbers:
  • The numbers that are exactly divisible by 2 are called even numbers.
  • Examples: 2, 4, 6, 8, 10..........
Odd Numbers:
  • The numbers that are not divisible by 2 are called odd numbers.
  • Example: 1, 3, 5, 7, 9..........
  • An exact divisor of a number is called its factor.
  • Example: 20 is completely divided by 5 and leaves remainder zero. Therefore 5 is a factor of 20.
  • When the given number is multiplied by any natural number then the product is a multiple of the given number and the natural number.
  • Example: When 8 is multiplied by 4 we get 32. Therefore 32 is a multiple of both 8 and 4.
Prime Numbers:
  • A number larger than 1 that is completely divisible (remainder 0) by 1 and itself only is called a prime number.
  • It has only 2 factors: 1 and itself.
    Example: 2, 3, 5, 7, 11................
Composite Numbers:
  • A number that is completely divisible (remainder 0) by any other number besides 1 and itself is called a composite number.
  • It has more than two factors.
    Example: 4, 6, 8, 9, 10.........

Directions: Answer the following questions and write 10 examples of each.
Q 1: A number divisible by 2 is an odd number.

Q 2: The only even prime number is_____

Q 3: Every number is a factor of itself.

Q 4: A number divisible by 2 is an even number.

Q 5: 1 is ____
neither prime nor composite

Q 6: The least prime number is ____

Q 7: Zero is a factor of every number.

Q 8: The sum of odd and even number is an even.

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!

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