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Subtraction

Learning tasks
        
Lesson Summary
Text book
Exercises Correction
Definitions
      Subtracting Number Within 20Ex 1 Ex 2 Ex 3 Ex 4 Ex 5 Ex 6 Ex 7 Ex 8
      Subtracting Multiple NumbersEx 9 Ex 10 Ex 11 Ex 12 Ex 13 Ex 14 Ex 15
Subtraction Using Columns
      Subtracting Using ColumnsEx 16 Ex 17 Ex 18 Ex 19
      Solving Real-World ProblemsEx 20 Ex 21 Ex 22 Ex 23