← 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 456 · 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. 1.33 + ? = 100
  2. 2.3 + ? = 10
  3. 3.2 + ? = 10
  4. 4.22 + ? = 100
  5. 5.5 + ? = 10
  6. 6.38 + ? = 100
  7. 7.66 + ? = 100
  8. 8.29 + ? = 100
  9. 9.1 + ? = 10
  10. 10.62 + ? = 100
  11. 11.37 + ? = 100
  12. 12.7 + ? = 10
  13. 13.89 + ? = 100
  14. 14.78 + ? = 100
  15. 15.48 + ? = 100
  16. 16.86 + ? = 100
  17. 17.44 + ? = 100
  18. 18.4 + ? = 10
  19. 19.79 + ? = 100
  20. 20.25 + ? = 100
  21. 21.41 + ? = 100
  22. 22.23 + ? = 100
  23. 23.76 + ? = 100
  24. 24.24 + ? = 100
  25. 25.35 + ? = 100
  26. 26.9 + ? = 10
  27. 27.20 + ? = 100
  28. 28.71 + ? = 100
  29. 29.16 + ? = 100
  30. 30.8 + ? = 10
  31. 31.43 + ? = 100
  32. 32.67 + ? = 100
  33. 33.6 + ? = 10
  34. 34.74 + ? = 100
  35. 35.65 + ? = 100
  36. 36.27 + ? = 100
  37. 37.58 + ? = 100
  38. 38.68 + ? = 100
  39. 39.40 + ? = 100
  40. 40.28 + ? = 100

Answer key

  1. 67
  2. 7
  3. 8
  4. 78
  5. 5
  6. 62
  7. 34
  8. 71
  9. 9
  10. 38
  11. 63
  12. 3
  13. 11
  14. 22
  15. 52
  16. 14
  17. 56
  18. 6
  19. 21
  20. 75
  21. 59
  22. 77
  23. 24
  24. 76
  25. 65
  26. 1
  27. 80
  28. 29
  29. 84
  30. 2
  31. 57
  32. 33
  33. 4
  34. 26
  35. 35
  36. 73
  37. 42
  38. 32
  39. 60
  40. 72

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