This is the EASIEST way in the world to do subtraction!
They won't teach you this way in any UK state school (possibly not even in any UK independent school either) BUT they should!
Don't bother with the stupid number line method or the one where you cross out all the numbers and change them - that's CONFUSING!
Learn the '1 up 1 down' method and you'll be able to subtract ANYTHING really quickly! It is the easiest way and makes the commonly used method of borrowing or trading zeros seem so much harder!
This IS the EASIEST method for ANY subtraction! Works for any take-aways where the top number is larger than the bottom. Much better and less confusing than the decomposition or regrouping or trading zeros method (whatever you want to call it - who cares - it's rubbish).
Explained here: [ Ссылка ]
If you know how this works, please post a comment.
If you can do it - let me know how easy you found it!
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Who does this method already?
The EASIEST method to do taking away! How to do subtraction.
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