← Number bonds to 10 and 100 lesson New set →

Number Bonds Worksheet (to 10 and 100)

Mental maths lesson 1: Number bonds to 10 and 100 · Set 696 · 40 questions
TalentJR

How to do it in your head (Make 10): Bonds to 10: 1 + 9, 2 + 8, 3 + 7, 4 + 6, 5 + 5. Bonds to 100: the ones make 10, and the tens make 9 (because the ones already gave one ten). If the number ends in 0, the tens make 10: 40 + 60 = 100.

NameDateTime takenScore ___ / 40
  1. 1.5 + ? = 10
  2. 2.9 + ? = 10
  3. 3.28 + ? = 100
  4. 4.2 + ? = 10
  5. 5.85 + ? = 100
  6. 6.6 + ? = 10
  7. 7.4 + ? = 10
  8. 8.83 + ? = 100
  9. 9.58 + ? = 100
  10. 10.32 + ? = 100
  11. 11.1 + ? = 10
  12. 12.43 + ? = 100
  13. 13.8 + ? = 10
  14. 14.59 + ? = 100
  15. 15.54 + ? = 100
  16. 16.3 + ? = 10
  17. 17.36 + ? = 100
  18. 18.84 + ? = 100
  19. 19.35 + ? = 100
  20. 20.53 + ? = 100
  21. 21.63 + ? = 100
  22. 22.24 + ? = 100
  23. 23.78 + ? = 100
  24. 24.23 + ? = 100
  25. 25.29 + ? = 100
  26. 26.79 + ? = 100
  27. 27.25 + ? = 100
  28. 28.74 + ? = 100
  29. 29.31 + ? = 100
  30. 30.42 + ? = 100
  31. 31.15 + ? = 100
  32. 32.7 + ? = 10
  33. 33.45 + ? = 100
  34. 34.76 + ? = 100
  35. 35.37 + ? = 100
  36. 36.48 + ? = 100
  37. 37.40 + ? = 100
  38. 38.18 + ? = 100
  39. 39.50 + ? = 100
  40. 40.44 + ? = 100

Answer key

  1. 5
  2. 1
  3. 72
  4. 8
  5. 15
  6. 4
  7. 6
  8. 17
  9. 42
  10. 68
  11. 9
  12. 57
  13. 2
  14. 41
  15. 46
  16. 7
  17. 64
  18. 16
  19. 65
  20. 47
  21. 37
  22. 76
  23. 22
  24. 77
  25. 71
  26. 21
  27. 75
  28. 26
  29. 69
  30. 58
  31. 85
  32. 3
  33. 55
  34. 24
  35. 63
  36. 52
  37. 60
  38. 82
  39. 50
  40. 56

Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths