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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 161 · 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. 1.21² =
  2. 2.3 + ? = 10
  3. 3.Half of 82 =
  4. 4.10% of ₹330 =
  5. 5.49 + 31 =
  6. 6.Double 23 =
  7. 7.Double 26 =
  8. 8.Half of 54 =
  9. 9.91 − 51 =
  10. 10.4 + ? = 10
  11. 11.28² =
  12. 12.What is the remainder when 29 is divided by 3?
  13. 13.39 + 6 =
  14. 14.237 ÷ 3 =
  15. 15.A train leaves at 1:35 and reaches the next city at 4:55. How many minutes is the journey?
  16. 16.What is the remainder when 56 is divided by 5?
  17. 17.88 ÷ 8 =
  18. 18.10% of ₹350 =
  19. 19.48 × 3 =
  20. 20.72 ÷ 4 =
  21. 21.1 + ? = 10
  22. 22.77 + 4 =
  23. 23.336 ÷ 4 =
  24. 24.94 − 19 =
  25. 25.25 + 9 =
  26. 26.Best estimate of 44 × 18? (a) 8000 (b) 80 (c) 800
  27. 27.52 ÷ 4 =
  28. 28.89 × 3 =
  29. 29.83 − 55 =
  30. 30.8 + ? = 10
  31. 31.16 + 5 =
  32. 32.884 − 99 =
  33. 33.13² =
  34. 34.162 ÷ 3 =
  35. 35.A film starts at 6:45 and ends at 8:10. How many minutes long is the film?
  36. 36.What is the remainder when 115 is divided by 8?
  37. 37.90 − 38 =
  38. 38.10% of ₹200 =
  39. 39.15 + 7 =
  40. 40.57 + 4 =

Answer key

  1. 441
  2. 7
  3. 41
  4. 33
  5. 80
  6. 46
  7. 52
  8. 27
  9. 40
  10. 6
  11. 784
  12. 2
  13. 45
  14. 79
  15. 200
  16. 1
  17. 11
  18. 35
  19. 144
  20. 18
  21. 9
  22. 81
  23. 84
  24. 75
  25. 34
  26. 800
  27. 13
  28. 267
  29. 28
  30. 2
  31. 21
  32. 785
  33. 169
  34. 54
  35. 85
  36. 3
  37. 52
  38. 20
  39. 22
  40. 61

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