Most of our students use the traditional method for addition
Start with the ones 4+1=5. Move to the tens 9+7=16...write down the 6 and carry the 10. Now move to the hundreds, 5+2+1=8.
For nontraditional methods please email me and I will gladly send examples to you!
Subtraction: the inverse (opposite) of addition...finding the difference between numbers
Here's the traditional method of stacking.
Follow the same pattern as addition and start with the ones. Since you can't do 2-5, you must borrow from the hundreds.
For nontraditional methods please email me :)
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