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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 605 · 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.Half of 54 =
  2. 2.Double 21 =
  3. 3.232 ÷ 8 =
  4. 4.17² =
  5. 5.46 × 3 =
  6. 6.You start your homework at 6:40 and finish at 8:05. How many minutes did you work?
  7. 7.74 × 4 =
  8. 8.1018 − 979 =
  9. 9.50% of ₹870 =
  10. 10.7 + ? = 10
  11. 11.90 − 29 =
  12. 12.18 × 8 =
  13. 13.9 + ? = 10
  14. 14.520 ÷ 8 =
  15. 15.Best estimate of 12 × 68? (a) 700 (b) 70 (c) 7000
  16. 16.100 − 29 =
  17. 17.25% of ₹500 =
  18. 18.What is the remainder when 66 is divided by 9?
  19. 19.You buy a notebook for ₹57 and pay with a ₹100 note. How much change do you get, in rupees?
  20. 20.82 − 9 =
  21. 21.10 + 11 =
  22. 22.You buy a cricket ball for ₹24 and pay with a ₹100 note. How much change do you get, in rupees?
  23. 23.33 laddoos are packed in boxes of 5. How many laddoos are left over?
  24. 24.25 × 8 =
  25. 25.689 − 99 =
  26. 26.A train leaves at 7:10 and reaches the next city at 10:00. How many minutes is the journey?
  27. 27.58 + 9 =
  28. 28.315 ÷ 9 =
  29. 29.48 + 52 =
  30. 30.88 + 8 =
  31. 31.86 − 15 =
  32. 32.You buy a pencil box for ₹163 and pay with a ₹500 note. How much change do you get, in rupees?
  33. 33.59 × 6 =
  34. 34.302 + 99 =
  35. 35.You start your homework at 1:35 and finish at 2:45. How many minutes did you work?
  36. 36.53 + 9 =
  37. 37.7 + 9 =
  38. 38.50% of ₹450 =
  39. 39.66 + 6 =
  40. 40.13 × 8 =

Answer key

  1. 27
  2. 42
  3. 29
  4. 289
  5. 138
  6. 85
  7. 296
  8. 39
  9. 435
  10. 3
  11. 61
  12. 144
  13. 1
  14. 65
  15. 700
  16. 71
  17. 125
  18. 3
  19. 43
  20. 73
  21. 21
  22. 76
  23. 3
  24. 200
  25. 590
  26. 170
  27. 67
  28. 35
  29. 100
  30. 96
  31. 71
  32. 337
  33. 354
  34. 401
  35. 70
  36. 62
  37. 16
  38. 225
  39. 72
  40. 104

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