← 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 192 · 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. 1.56 + ? = 100
  2. 2.43 + ? = 100
  3. 3.48 + ? = 100
  4. 4.2 + ? = 10
  5. 5.5 + ? = 10
  6. 6.1 + ? = 10
  7. 7.7 + ? = 10
  8. 8.9 + ? = 10
  9. 9.36 + ? = 100
  10. 10.22 + ? = 100
  11. 11.77 + ? = 100
  12. 12.44 + ? = 100
  13. 13.29 + ? = 100
  14. 14.39 + ? = 100
  15. 15.12 + ? = 100
  16. 16.8 + ? = 10
  17. 17.40 + ? = 100
  18. 18.68 + ? = 100
  19. 19.19 + ? = 100
  20. 20.21 + ? = 100
  21. 21.24 + ? = 100
  22. 22.4 + ? = 10
  23. 23.75 + ? = 100
  24. 24.74 + ? = 100
  25. 25.84 + ? = 100
  26. 26.6 + ? = 10
  27. 27.79 + ? = 100
  28. 28.3 + ? = 10
  29. 29.58 + ? = 100
  30. 30.47 + ? = 100
  31. 31.51 + ? = 100
  32. 32.32 + ? = 100
  33. 33.34 + ? = 100
  34. 34.26 + ? = 100
  35. 35.76 + ? = 100
  36. 36.70 + ? = 100
  37. 37.25 + ? = 100
  38. 38.31 + ? = 100
  39. 39.65 + ? = 100
  40. 40.69 + ? = 100

Answer key

  1. 44
  2. 57
  3. 52
  4. 8
  5. 5
  6. 9
  7. 3
  8. 1
  9. 64
  10. 78
  11. 23
  12. 56
  13. 71
  14. 61
  15. 88
  16. 2
  17. 60
  18. 32
  19. 81
  20. 79
  21. 76
  22. 6
  23. 25
  24. 26
  25. 16
  26. 4
  27. 21
  28. 7
  29. 42
  30. 53
  31. 49
  32. 68
  33. 66
  34. 74
  35. 24
  36. 30
  37. 75
  38. 69
  39. 35
  40. 31

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