← 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 863 · 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. 1.2 + ? = 10
  2. 2.11 + ? = 100
  3. 3.18 + ? = 100
  4. 4.64 + ? = 100
  5. 5.71 + ? = 100
  6. 6.14 + ? = 100
  7. 7.27 + ? = 100
  8. 8.53 + ? = 100
  9. 9.67 + ? = 100
  10. 10.32 + ? = 100
  11. 11.3 + ? = 10
  12. 12.7 + ? = 10
  13. 13.1 + ? = 10
  14. 14.12 + ? = 100
  15. 15.46 + ? = 100
  16. 16.55 + ? = 100
  17. 17.80 + ? = 100
  18. 18.6 + ? = 10
  19. 19.87 + ? = 100
  20. 20.5 + ? = 10
  21. 21.44 + ? = 100
  22. 22.20 + ? = 100
  23. 23.8 + ? = 10
  24. 24.17 + ? = 100
  25. 25.82 + ? = 100
  26. 26.19 + ? = 100
  27. 27.57 + ? = 100
  28. 28.56 + ? = 100
  29. 29.4 + ? = 10
  30. 30.40 + ? = 100
  31. 31.58 + ? = 100
  32. 32.88 + ? = 100
  33. 33.34 + ? = 100
  34. 34.15 + ? = 100
  35. 35.9 + ? = 10
  36. 36.70 + ? = 100
  37. 37.69 + ? = 100
  38. 38.16 + ? = 100
  39. 39.85 + ? = 100
  40. 40.35 + ? = 100

Answer key

  1. 8
  2. 89
  3. 82
  4. 36
  5. 29
  6. 86
  7. 73
  8. 47
  9. 33
  10. 68
  11. 7
  12. 3
  13. 9
  14. 88
  15. 54
  16. 45
  17. 20
  18. 4
  19. 13
  20. 5
  21. 56
  22. 80
  23. 2
  24. 83
  25. 18
  26. 81
  27. 43
  28. 44
  29. 6
  30. 60
  31. 42
  32. 12
  33. 66
  34. 85
  35. 1
  36. 30
  37. 31
  38. 84
  39. 15
  40. 65

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