← 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 728 · 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. 1.1 + ? = 10
  2. 2.76 + ? = 100
  3. 3.88 + ? = 100
  4. 4.13 + ? = 100
  5. 5.8 + ? = 10
  6. 6.62 + ? = 100
  7. 7.2 + ? = 10
  8. 8.61 + ? = 100
  9. 9.42 + ? = 100
  10. 10.18 + ? = 100
  11. 11.7 + ? = 10
  12. 12.4 + ? = 10
  13. 13.3 + ? = 10
  14. 14.6 + ? = 10
  15. 15.19 + ? = 100
  16. 16.5 + ? = 10
  17. 17.57 + ? = 100
  18. 18.27 + ? = 100
  19. 19.9 + ? = 10
  20. 20.11 + ? = 100
  21. 21.84 + ? = 100
  22. 22.72 + ? = 100
  23. 23.26 + ? = 100
  24. 24.75 + ? = 100
  25. 25.83 + ? = 100
  26. 26.73 + ? = 100
  27. 27.12 + ? = 100
  28. 28.53 + ? = 100
  29. 29.55 + ? = 100
  30. 30.50 + ? = 100
  31. 31.89 + ? = 100
  32. 32.14 + ? = 100
  33. 33.41 + ? = 100
  34. 34.64 + ? = 100
  35. 35.21 + ? = 100
  36. 36.65 + ? = 100
  37. 37.71 + ? = 100
  38. 38.37 + ? = 100
  39. 39.38 + ? = 100
  40. 40.46 + ? = 100

Answer key

  1. 9
  2. 24
  3. 12
  4. 87
  5. 2
  6. 38
  7. 8
  8. 39
  9. 58
  10. 82
  11. 3
  12. 6
  13. 7
  14. 4
  15. 81
  16. 5
  17. 43
  18. 73
  19. 1
  20. 89
  21. 16
  22. 28
  23. 74
  24. 25
  25. 17
  26. 27
  27. 88
  28. 47
  29. 45
  30. 50
  31. 11
  32. 86
  33. 59
  34. 36
  35. 79
  36. 35
  37. 29
  38. 63
  39. 62
  40. 54

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