← 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 957 · 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. 1.3 + ? = 10
  2. 2.6 + ? = 10
  3. 3.57 + ? = 100
  4. 4.63 + ? = 100
  5. 5.72 + ? = 100
  6. 6.12 + ? = 100
  7. 7.7 + ? = 10
  8. 8.8 + ? = 10
  9. 9.21 + ? = 100
  10. 10.4 + ? = 10
  11. 11.19 + ? = 100
  12. 12.88 + ? = 100
  13. 13.27 + ? = 100
  14. 14.47 + ? = 100
  15. 15.89 + ? = 100
  16. 16.2 + ? = 10
  17. 17.5 + ? = 10
  18. 18.71 + ? = 100
  19. 19.55 + ? = 100
  20. 20.43 + ? = 100
  21. 21.81 + ? = 100
  22. 22.74 + ? = 100
  23. 23.41 + ? = 100
  24. 24.67 + ? = 100
  25. 25.34 + ? = 100
  26. 26.65 + ? = 100
  27. 27.31 + ? = 100
  28. 28.84 + ? = 100
  29. 29.20 + ? = 100
  30. 30.68 + ? = 100
  31. 31.38 + ? = 100
  32. 32.60 + ? = 100
  33. 33.61 + ? = 100
  34. 34.50 + ? = 100
  35. 35.1 + ? = 10
  36. 36.16 + ? = 100
  37. 37.73 + ? = 100
  38. 38.70 + ? = 100
  39. 39.30 + ? = 100
  40. 40.76 + ? = 100

Answer key

  1. 7
  2. 4
  3. 43
  4. 37
  5. 28
  6. 88
  7. 3
  8. 2
  9. 79
  10. 6
  11. 81
  12. 12
  13. 73
  14. 53
  15. 11
  16. 8
  17. 5
  18. 29
  19. 45
  20. 57
  21. 19
  22. 26
  23. 59
  24. 33
  25. 66
  26. 35
  27. 69
  28. 16
  29. 80
  30. 32
  31. 62
  32. 40
  33. 39
  34. 50
  35. 9
  36. 84
  37. 27
  38. 30
  39. 70
  40. 24

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