Subtraction strategies

This year Jackson's Studio Rm 18 has been doing some problem solving.We learnt how to solve subtraction, addition, mutiplication, and division question's easily. Today I am going to teach you two subtraction strategies.

This is my first stratergy, and this one is called, equal adjustments. The reason I like this strategy is because it is short, and easy to understand.

       264-196=68

+4   +4

      268-200=68

This is the second stratergy that I am going to show you.This one is called Place Value. I like this stratergy, because it is simple to remember.

264-196=

264-100=164

164-90=74

74-8=68

I hope you learnt something, have a great day.^_^