In year 3, the Bluebirds have been learning how to do column addition with regrouping.
We are given a three digit addition sum on the board and we make it in counters in our hundreds, tens and ones chart. We also write it on our whiteboard, ensuring that the numbers are lined up correctly and in the right column.
We start in the ones column, by putting all our ones together we can see how many there are altogether. If the ones column is more than 10, we can replace 10 ones with a tens counter and regroup the tens into the tens column.
Now, we can add our tens together, moving the counters together and putting the answer in the tens column.
Then, we can do the same with our hundreds. Put all the hundred counters together and put our answer in the hundreds column.