← 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 736 · 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. 1.6 + ? = 10
  2. 2.5 + ? = 10
  3. 3.17 + ? = 100
  4. 4.1 + ? = 10
  5. 5.58 + ? = 100
  6. 6.56 + ? = 100
  7. 7.34 + ? = 100
  8. 8.52 + ? = 100
  9. 9.2 + ? = 10
  10. 10.7 + ? = 10
  11. 11.41 + ? = 100
  12. 12.53 + ? = 100
  13. 13.21 + ? = 100
  14. 14.3 + ? = 10
  15. 15.49 + ? = 100
  16. 16.4 + ? = 10
  17. 17.8 + ? = 10
  18. 18.51 + ? = 100
  19. 19.14 + ? = 100
  20. 20.23 + ? = 100
  21. 21.16 + ? = 100
  22. 22.64 + ? = 100
  23. 23.66 + ? = 100
  24. 24.22 + ? = 100
  25. 25.46 + ? = 100
  26. 26.71 + ? = 100
  27. 27.62 + ? = 100
  28. 28.9 + ? = 10
  29. 29.28 + ? = 100
  30. 30.19 + ? = 100
  31. 31.57 + ? = 100
  32. 32.13 + ? = 100
  33. 33.72 + ? = 100
  34. 34.35 + ? = 100
  35. 35.74 + ? = 100
  36. 36.32 + ? = 100
  37. 37.33 + ? = 100
  38. 38.39 + ? = 100
  39. 39.15 + ? = 100
  40. 40.26 + ? = 100

Answer key

  1. 4
  2. 5
  3. 83
  4. 9
  5. 42
  6. 44
  7. 66
  8. 48
  9. 8
  10. 3
  11. 59
  12. 47
  13. 79
  14. 7
  15. 51
  16. 6
  17. 2
  18. 49
  19. 86
  20. 77
  21. 84
  22. 36
  23. 34
  24. 78
  25. 54
  26. 29
  27. 38
  28. 1
  29. 72
  30. 81
  31. 43
  32. 87
  33. 28
  34. 65
  35. 26
  36. 68
  37. 67
  38. 61
  39. 85
  40. 74

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