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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 715 · 40 questions
TalentJR

How to do it in your head (Look first): A 9, 19 or 99 → round and adjust. Two close numbers → count up (or near doubles when adding). × or ÷ by 4 or 8 → double or halve; other sums → split into tens and ones.

NameDateTime takenScore ___ / 40
  1. 1.12 + 13 =
  2. 2.1003 − 997 =
  3. 3.72 − 35 =
  4. 4.66 × 9 =
  5. 5.93 − 15 =
  6. 6.31 + ? = 100
  7. 7.834 − 99 =
  8. 8.78 + 7 =
  9. 9.29 + 28 =
  10. 10.123 ÷ 3 =
  11. 11.36 + 9 =
  12. 12.53 × 4 =
  13. 13.16² =
  14. 14.59 + 9 =
  15. 15.13 × 4 =
  16. 16.225 − 179 =
  17. 17.74 + 62 =
  18. 18.14² =
  19. 19.88 ÷ 8 =
  20. 20.81 − 58 =
  21. 21.18² =
  22. 22.174 ÷ 3 =
  23. 23.69 × 3 =
  24. 24.803 − 99 =
  25. 25.25% of ₹390 =
  26. 26.11² =
  27. 27.21 + 23 =
  28. 28.52 − 32 =
  29. 29.72 − 38 =
  30. 30.23 × 8 =
  31. 31.27² =
  32. 32.176 ÷ 4 =
  33. 33.66 − 32 =
  34. 34.88 − 76 =
  35. 35.150 ÷ 6 =
  36. 36.13 + 14 =
  37. 37.12 + 14 =
  38. 38.21² =
  39. 39.15 + 17 =
  40. 40.7 + 6 =

Answer key

  1. 25
  2. 6
  3. 37
  4. 594
  5. 78
  6. 69
  7. 735
  8. 85
  9. 57
  10. 41
  11. 45
  12. 212
  13. 256
  14. 68
  15. 52
  16. 46
  17. 136
  18. 196
  19. 11
  20. 23
  21. 324
  22. 58
  23. 207
  24. 704
  25. 97.5
  26. 121
  27. 44
  28. 20
  29. 34
  30. 184
  31. 729
  32. 44
  33. 34
  34. 12
  35. 25
  36. 27
  37. 26
  38. 441
  39. 32
  40. 13

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