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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 916 · 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. 1.21 × 8 =
  2. 2.72 ÷ 4 =
  3. 3.58 + 8 =
  4. 4.36 + 9 =
  5. 5.31 laddoos are packed in boxes of 4. How many laddoos are left over?
  6. 6.136 ÷ 4 =
  7. 7.24² =
  8. 8.17 + 4 =
  9. 9.Double 86 =
  10. 10.366 ÷ 6 =
  11. 11.39 + 87 =
  12. 12.A film starts at 8:10 and ends at 8:55. How many minutes long is the film?
  13. 13.44 + 69 =
  14. 14.75 − 39 =
  15. 15.85 − 56 =
  16. 16.17 + 5 =
  17. 17.What is the remainder when 87 is divided by 9?
  18. 18.87 − 65 =
  19. 19.97 − 84 =
  20. 20.66 + 7 =
  21. 21.109 − 89 =
  22. 22.Best estimate of 16 × 37? (a) 800 (b) 80 (c) 8000
  23. 23.10% of ₹200 =
  24. 24.A cricket match starts at 2:50 and the first innings ends at 4:00. How many minutes did the innings last?
  25. 25.84 − 44 =
  26. 26.6 + ? = 10
  27. 27.25% of ₹500 =
  28. 28.Double 84 =
  29. 29.75 × 4 =
  30. 30.59 − 30 =
  31. 31.28 + 27 =
  32. 32.56 × 4 =
  33. 33.19² =
  34. 34.Half of 188 =
  35. 35.70 − 16 =
  36. 36.67 × 8 =
  37. 37.22 + ? = 100
  38. 38.26² =
  39. 39.10 + 11 =
  40. 40.25 + 81 =

Answer key

  1. 168
  2. 18
  3. 66
  4. 45
  5. 3
  6. 34
  7. 576
  8. 21
  9. 172
  10. 61
  11. 126
  12. 45
  13. 113
  14. 36
  15. 29
  16. 22
  17. 6
  18. 22
  19. 13
  20. 73
  21. 20
  22. 800
  23. 20
  24. 70
  25. 40
  26. 4
  27. 125
  28. 168
  29. 300
  30. 29
  31. 55
  32. 224
  33. 361
  34. 94
  35. 54
  36. 536
  37. 78
  38. 676
  39. 21
  40. 106

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