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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 376 · 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. 1.12² =
  2. 2.55 + 6 =
  3. 3.97 − 29 =
  4. 4.49 children stand in rows of 5. How many full rows can they make?
  5. 5.16 × 4 =
  6. 6.78 × 3 =
  7. 7.A film starts at 8:50 and ends at 9:40. How many minutes long is the film?
  8. 8.5% of ₹410 =
  9. 9.182 ÷ 7 =
  10. 10.10% of ₹80 =
  11. 11.232 ÷ 4 =
  12. 12.Double 19 =
  13. 13.Best estimate of 347 + 352? (a) 700 (b) 500 (c) 900
  14. 14.19 + 18 =
  15. 15.You start your homework at 6:20 and finish at 7:40. How many minutes did you work?
  16. 16.1026 − 982 =
  17. 17.58 − 31 =
  18. 18.7 + ? = 10
  19. 19.Double 29 =
  20. 20.A film starts at 6:35 and ends at 9:30. How many minutes long is the film?
  21. 21.46 children stand in rows of 4. How many full rows can they make?
  22. 22.13 + 14 =
  23. 23.28 + ? = 100
  24. 24.268 ÷ 4 =
  25. 25.88 ÷ 8 =
  26. 26.53 + 29 =
  27. 27.83 × 3 =
  28. 28.A film starts at 7:20 and ends at 8:15. How many minutes long is the film?
  29. 29.1025 − 984 =
  30. 30.33 + 89 =
  31. 31.57 + 62 =
  32. 32.Double 74 =
  33. 33.Double 53 =
  34. 34.53 × 4 =
  35. 35.21 + 20 =
  36. 36.11² =
  37. 37.10% of ₹50 =
  38. 38.Best estimate of 781 + 660? (a) 1300 (b) 1500 (c) 1700
  39. 39.5% of ₹690 =
  40. 40.107 − 96 =

Answer key

  1. 144
  2. 61
  3. 68
  4. 9
  5. 64
  6. 234
  7. 50
  8. 20.5
  9. 26
  10. 8
  11. 58
  12. 38
  13. 700
  14. 37
  15. 80
  16. 44
  17. 27
  18. 3
  19. 58
  20. 175
  21. 11
  22. 27
  23. 72
  24. 67
  25. 11
  26. 82
  27. 249
  28. 55
  29. 41
  30. 122
  31. 119
  32. 148
  33. 106
  34. 212
  35. 41
  36. 121
  37. 5
  38. 1500
  39. 34.5
  40. 11

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