Number & Algebra- Properties of Numbers
Identify and describe properties of prime, composite, square and triangular numbers
- understanding that some numbers have special properties and that these properties can be used to solve problems
- representing composite numbers as a product of their prime factors and using this form to simplify calculations by cancelling common primes
- understanding that if a number is divisible by a composite number then it is also divisible by the prime factors of that number (for example 216 is divisible by 8 because the number represented by the last three digits is divisible by 8, and hence 216 is also divisible by 2 and 4)
Prime or Composite
Videos to revise the topic: Prime Numbers & Composite Numbers
Lyrics: Some numbers are alone, they sit up on a shelf. Nothing divides into them but 1 and themselves. Other numbers have lots of fun and friends they have aplenty. Like 2 x 3 is 6, and 5 x 4 is 20. Some numbers just stand alone. And others you divide, numbers are composite or prime.
Activity 1: Use these games to revise the topic
Prime and Composite Games/ Revision
Activity 2: Book Work: Rule up your Grid Math Books. Put the title and date. Work through these questions.
2) Book Work
Activity 3: For Fun- Sieve or Eratosthenes (Finding Prime Numbers)
Watch the Video and grab a sheet from your teacher to have a go!
Click on the picture below to have a go!!
Activity 4- Partner Work. Collect a sheet from the teacher. Find the Prime Numbers to complete the maze and help the dog reach the bone. You may use a calculator if needed.
Activity 5- With a teacher.
Find the station with these numbers 1-100 in a box. Pull out 10 random numbers.