Arithmetic Grade Four

Lesson Nine: Subtraction Review

Here's a table showing the basic subtraction facts:

9-1=8	9-2=7	9-3=6	9-4=5	9-5=4	9-6=3	9-7=2	9-8=1
8-1=7	8-2=6	8-3=5	8-4=4	8-5=3	8-6=2	8-7=1
7-1=6	7-2=5	7-3=4	7-4=3	7-5=2	7-6=1
6-1=5	6-2=4	6-3=3	6-4=2	6-5=1
5-1=4	5-2=3	5-3=2	5-4=1
4-1=3	4-2=2	4-3=1
3-1=2	3-2=1
2-1=1

We could also add to this table facts like:

  9 - 0 = 9                  9 - 9 = 0
  5 - 0 = 5                  5 - 5 = 0
  3 - 0 = 3                  3 - 3 = 0

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