Workbook: 5A
Chapter: 3 Multiplication and Division
Lesson: 3 and 4 Finding Common Factors and Prime Numbers
Printer-friendly version: Thursday Maths blog June 4
Good morning Year 5,
Today we will consolidate our learning of common factors and prime numbers.
A factor is a number that divides into another number exactly. To find the common factors of two numbers, you first need to list all the factors of each one and then compare them. If a factor appears in both lists then it is a common factor.
A prime number is a whole number greater than 1 that can not be made by multiplying other whole numbers.
Example: 5 is a prime number. We cannot multiply 2, 3 or 4 together to make 5. (Only 1×5 works but we said to use other whole numbers.)
Example: 6 can be made by 2 × 3 so is NOT a prime number (it is a composite number).
If you need further support, have a look at these clips:
BBC Bitesize: What are prime numbers?
BBC Bitesize: What is a common factor?
Once you have completed the MNP sheets, please try the extension if you wish: Year-5-Multiplication-and-Division
You can find the answers here: Answers_Year-5-Multiplication-and-Division
Please ask for help in the comments if you need it.
Good luck!
Mrs Avdiu & Ms Robertson xx
It is not my working day so Miss Carruthers will kindly respond to the blogs today.
I am a bit confused on worksheet 4 ?
I don’t really understand it, can someone help me, please?
~ Nika
Are you still confused?
Hello again!
I finished today’s maths task, and to be honest, it was not as hard as I thought it would be!
Have a great day!
Nika ?️
Well done for persevering and working it out 🙂
Good morning everyone, I have finished the maths extension and I got 18/18; it was quite fun even though it was easy.
I’m glad you had fun doing it Zavan. Well done 🙂
Hello everyone! I found this blog a bit tricky but eventually, I worked it out!
Have a nice day everyone! Bye ?
Well done Kayla! Keep up the good work 🙂
Hello everyone I found today’s tasks a bit tricky but I managed to figure them out I hope everyone has a great day ?☺️
Well done for working them out! 🙂
Regan and I have completed the maths work for today ?
Excellent work!
Hello everyone!
The math today was easy to do and very fun to do. ?
I hope you have a lovely rest of the day. ?
Well done! I hope you had a good day too!
Hello Miss
We have both completed the extension maths for today.
Well done girls!