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Subtraction

Learning tasks

Definitions
1) Subtracting Number Within 20	Ex 1 Ex 2 Ex 3 Ex 4 Ex 5 Ex 6 Ex 7 Ex 8
2) Subtracting Multiple Numbers	Ex 9 Ex 10 Ex 11 Ex 12 Ex 13 Ex 14 Ex 15
Subtraction Using Columns
3) Subtracting Using Columns	Ex 16 Ex 17 Ex 18 Ex 19
4) Solving Real-World Problems	Ex 20 Ex 21 Ex 22 Ex 23

Lesson Summary
Text book

Exercises Correction
Definitions
    1)  Subtracting Number Within 20 Ex 1 Ex 2 Ex 3 Ex 4 Ex 5 Ex 6 Ex 7 Ex 8
    2)  Subtracting Multiple Numbers Ex 9 Ex 10 Ex 11 Ex 12 Ex 13 Ex 14 Ex 15
Subtraction Using Columns
    3)  Subtracting Using Columns Ex 16 Ex 17 Ex 18 Ex 19
    4)  Solving Real-World Problems Ex 20 Ex 21 Ex 22 Ex 23