← 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 446 · 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. 1.4 + ? = 10
  2. 2.7 + ? = 10
  3. 3.3 + ? = 10
  4. 4.40 + ? = 100
  5. 5.1 + ? = 10
  6. 6.69 + ? = 100
  7. 7.5 + ? = 10
  8. 8.17 + ? = 100
  9. 9.84 + ? = 100
  10. 10.44 + ? = 100
  11. 11.8 + ? = 10
  12. 12.57 + ? = 100
  13. 13.29 + ? = 100
  14. 14.87 + ? = 100
  15. 15.42 + ? = 100
  16. 16.41 + ? = 100
  17. 17.13 + ? = 100
  18. 18.9 + ? = 10
  19. 19.6 + ? = 10
  20. 20.56 + ? = 100
  21. 21.2 + ? = 10
  22. 22.22 + ? = 100
  23. 23.36 + ? = 100
  24. 24.77 + ? = 100
  25. 25.18 + ? = 100
  26. 26.82 + ? = 100
  27. 27.50 + ? = 100
  28. 28.30 + ? = 100
  29. 29.58 + ? = 100
  30. 30.46 + ? = 100
  31. 31.15 + ? = 100
  32. 32.27 + ? = 100
  33. 33.24 + ? = 100
  34. 34.55 + ? = 100
  35. 35.25 + ? = 100
  36. 36.32 + ? = 100
  37. 37.31 + ? = 100
  38. 38.43 + ? = 100
  39. 39.78 + ? = 100
  40. 40.65 + ? = 100

Answer key

  1. 6
  2. 3
  3. 7
  4. 60
  5. 9
  6. 31
  7. 5
  8. 83
  9. 16
  10. 56
  11. 2
  12. 43
  13. 71
  14. 13
  15. 58
  16. 59
  17. 87
  18. 1
  19. 4
  20. 44
  21. 8
  22. 78
  23. 64
  24. 23
  25. 82
  26. 18
  27. 50
  28. 70
  29. 42
  30. 54
  31. 85
  32. 73
  33. 76
  34. 45
  35. 75
  36. 68
  37. 69
  38. 57
  39. 22
  40. 35

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