Day 3 Prime numbers Success Criteria I can
Day 3 – Prime numbers Success Criteria ü I can identify prime numbers ü I can find the sum of prime numbers ü I can explain my reasoning. DNA
Write the definitions for the words we will come across today – can you think of an example question for the word? Word Prime number Sum of Definition Example
This week To be able to find common factors To be able to find common multiples To be able to square and cube numbers To be able to understand prime numbers To be able to reason from known facts
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A prime number only has two factors: 1 and itself. Which of the following numbers are prime numbers? 3 11 15 23 21 1 30 37 18 29 17 12 19
A prime number only has two factors: 1 and itself. Which of the following numbers are prime numbers? 3 11 15 23 21 1 30 37 18 29 17 12 19 1 is not a prime number because it only has one factor
What is the sum of the next two prime numbers in the following sequence? 23, 29, 31, 37, __
What is the sum of the next two prime numbers in the following sequence? 23, 29, 31, 37, 41, 43 41 + 43 = 84
Which of the following numbers are not prime factors of 42? 7 21 2 3 6 13
Which of the following numbers are not prime factors of 42? 7 21 2 3 6 13
Colour all the prime factors in the factor tree. 72 9 8 4 2 2
Colour all the prime factors in the factor tree. 72 9 8 4 2 2 2
True or false? The prime factors of 45 are 5 and 3.
True or false? The prime factors of 45 are 5 and 3. True
Hamish says, The sum of the 6 th and 9 th prime number is greater than the sum of the 5 th and 10 th. Is he correct? Explain why.
Reasoning practise – choose your challenge!
Answers:
Problem solving practise – choose your challenge!
Answers:
Extension (optional)
Extension (answer)
Reflection • What went well today? • What did you feel you were good at? • What were the challenges? • What did you not enjoy doing? • How could you improve next time? • What are your next steps?
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