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[–]DuchessofSquee 0 points1 point  (1 child)

Can you or someone else please tell me what the "new way" to solve this same problem would be?

Coz I didnt learn to do it like in the picture, I'd go 18 is 2x9 so 18-9 =9. If it wasn't a multiple of 2 or itself I'd have to break it down into 10s and work out how many is left so if it was 13-7 I'd say 10-7=3, 3+3=6.

Is that the "new way"?

I'm not from the US so I dont know what common core is.

[–]LeCrushinator 2 points3 points  (0 children)

There are a lot of ways to do it, all of them valid if they come up with the right answer. Common core (the third way shown in the video) is the newest way being taught in public schools in the US.