Equal additions if you are using equal additions you must be to subtraction. In Equal additions if you add two to one number you must to it with the other.If you can try and make to a even number.
You can use borrowing for subtracting & adding.
Thursday 28 September 2017
Addition & Subtraction
These are all the strategy's I use to solve my addition & subtraction. I made this my goal to know all of these and be able to use them with decimals to.
Equal additions if you are using equal additions you must be to subtraction. In Equal additions if you add two to one number you must to it with the other.If you can try and make to a even number.
Don't subtract,add If you are doing don't subtract,add you have to be doing subtraction.Don't subtract add is really easy you just swap the numbers round,like shown.
Rounding & compensating If you are do rounding & compensating you can use adding & subtracting.
Place value. You can use place value for adding & subtracting. Its easy you just add the hundreds then the tenths then the ones then you add them all together.
Borrowing borrowing is where you just take numbers of one number & put it on the other number to make it a tidy number.
You can use borrowing for subtracting & adding.
Equal additions if you are using equal additions you must be to subtraction. In Equal additions if you add two to one number you must to it with the other.If you can try and make to a even number.You can use borrowing for subtracting & adding.
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