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Wednesday, 12 December 2012

Subtracting Ones and Tens part 2.

Subtracting Ones and Tens part 2.

1. 56 - 34 = 22
   6 - 4 = 2
  50 - 30 = 20

2. 45 - 21 = 24
   5 - 1 =  4
  40 - 20 = 20

3. 52 - 21 = 31
   2 - 1 = 1
  50 - 20 = 30

4. 42 - 32 = 10
   2 - 2 = 0
 40 - 30 = 10

5. 35 - 14 = 21
   5 - 4 = 1
  30 - 10 = 20

6. 63 - 61 = 1
   3 - 1 = 2
  60 - 60 = 0

7. 38 - 28 = 10
    8 - 8 = 0
   30 - 20 = 10

8. 34 - 13 = 21
   4 - 3 = 1
  30 - 10 = 20

9. 46 - 24 = 22
    6 - 4 = 2
  40 - 20 = 20

10. 55 - 25 = 30
     5 - 5 = 0
    50 - 20 = 30

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