Maths in Room 12

At the moment in Room 12 we are focusing on addition and subtraction, however we have very different learning happening within that.

 
Our circles group last week looked at adding by splitting tens and ones.
Like 32+16 = 30+10 = 40 and 2+6 = 8
then 40+8 = 48

Today we 'borrowed' numbers to jump to tidy numbers to help our adding.
Like 7 + 15 = 15 + 5 = 20
20 + 2 =22


Our triangles group has learnt a new subtraction strategy called 'jumping the number line'.
If we have 256 - 84 =
We can start at 84 and jump to the tidy number of 90 (this is +6)
Then jump to 100 (this is +10)
Then jump to 200 (this is +100)
Then jump to 250 (this is +50)
Then jump to 256 (this is +6)
We can then add up all our addition to make 172.

This group has clicked onto this strategy really, really well!


Our squares group are working on adding and subtracting decimals to two decimal places.  They are able to use a range of strategies like borrowing or algorithms. All these maths whizes have a great range of strategies to call on which is fantastic.