Exchanging in subtraction19 October 2022 (by admin) |
Voyagers and Discoverers have been mastering the difficult method of column subtraction which involve exchanging.
Voyagers and Discoverers have been mastering the difficult method of column subtraction which involves exchanging.They started by using place value charts and counters to develop their understanding of what each step means when you have to exchange when subtracting in columns. Lots of amazing explanations such as, 'I don't have enough tens so I will have to exchange 1 hundred for 10 tens."