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Maylandsea Primary School

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Maths

Wednesday

 

Yesterday we worked on factors and multiples.  Today we are going to move on from factors to factor pairs.  As you know, a pair is 2 so a factor pair  shows the 2 numbers that multiply together to make the bigger number.

 

For example, if we use the example from yesterday of the number 10, we know that the factors are 1, 2, 5 and 10.  Because 2 x 5 = 10, this is a factor pair, so 2 and 5 is a factor pair of 10.  

 

This video will recap what we did yesterday and also explain the arc, which is similar to one of the methods we will see below: https://www.youtube.com/watch?v=yJ-T8z2-Zg4.

 

These can be displayed and worked out in several ways however using a factor rainbow or a factor bug are 2 of the most fun ways to use.  Watch the following 2 videos, to see which one you prefer.

 

Factor Rainbow: https://www.youtube.com/watch?v=8ehDQYkF1_k

Factor Bugs: https://www.youtube.com/watch?v=G0wIJ4qhQW4

 

Once you have looked at the methods, choose one of them (or even use both!) to try to find the factor pairs of the following numbers:

 

Challenge 1:    8, 15, 22, 30 and 32

Challenge 2:    9, 14, 24, 36 and 42

Challenge 3:    19, 27, 40, 48 and 60

 

 

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