L.I add and subtract numbers by column method
L.I to check our answers using other methods.
Today for maths our must do was to do level 4 and 5 of basic subtraction on Transum. I got all of them right for level 4 and 5. We had to take a screenshot of one of our answers we got right and explain how we got the answer using column method.
55
-
33
= 22
5 5
-
3 3
2 2
It makes 22 because if you take 3 from 5 it equals 2 and then you do it again and now you have another 2 so when you put them together you get 22.
240
-
139
= 101
240
-
139
=
11?
Now you have a problem, the 0 is smaller than 9. So what you have to do is borrow, and to borrow you need to take one number off the number after it and add it to your problem.
Now you have a problem, the 0 is smaller than 9. So what you have to do is borrow, and to borrow you need to take one number off the number after it and add it to your problem.
240
-
139
= 101
240
-
139
=
101
And now you have got your answer.
And now you have got your answer.
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