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Flashcards

Adding +3 to sums of 20

Bruce Akitt Mathematics Grade 12 English 31 cards

Cards in this deck (31)

  1. 11 + 3 = ___1 + 3 = _4_
  2. 23 + 1 = ___3 + 1 = _4_
  3. 3___ + 3 = 4_1_ + 3 = 4
  4. 41 + ___ = 41 + _3_ = 4
  5. 52 + 3 = ___2 + 3 = _5_
  6. 63 + 2 = ___3 + 2 = _5_
  7. 7___ + 3 = 5_2_ + 3 = 5
  8. 82 + ___ = 52 + _3_ = 5
  9. 93 + 3 = ___3 + 3 = _6_
  10. 10___ + 3 = 6_3_ + 3 = 6
  11. 113 + ___ = 63 + _3_ = 6
  12. 124 + 3 = ___4 + 3 = _7_
  13. 134 + ___ = 74 + _3_ = 7
  14. 145 + 3 = ___5 + 3 = _8_
  15. 155 + ___ = 85 + _3_ = 8
  16. 166 + 3 = ___6 + 3 = _9_
  17. 176 + ___ = 96 + _3_ = 9
  18. 187 + 3 = ___7 + 3 = _10_
  19. 197 + ___ = 107 + _3_ = 10
  20. 208 + 3 = ___8 + 3 = _11_
  21. 218 + ___ = 118 + _3_ = 11
  22. 229 + 3 = ___9 + 3 = _12_
  23. 239 + ___ = 129 + _3_ = 12
  24. 2410 + 3 = ___10 + 3 = _13_
  25. 2511 + 3 = ___11 + 3 = 10 + 4 =_14_
  26. 2612 + 3 = ___12 + 3 = 10 + 5 = _15_
  27. 2713 + 3 = ___13 + 3 = 10 + 6 = _16_
  28. 2814 + 3 = ___14 + 3 = 10 + 7 = _17_
  29. 2915 + 3 = ___15 + 3 = 10 + 8 = _18_
  30. 3016 + 3 = ___16 + 3 = 10 + 9 = _19_
  31. 3117 + 3 = ___17 + 3 = _20_

Information

Description
Practice of the addition facts of adding +3 to numbers from 1 10 10 . Also practice two step mental process to add +3 to two digit numbers to sums of 20.
Created by
Bruce Akitt
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