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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 467 · 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.Double 89 =
  2. 2.85 − 69 =
  3. 3.32 + 21 =
  4. 4.506 − 498 =
  5. 5.2 + ? = 10
  6. 6.Best estimate of 360 + 498? (a) 900 (b) 1100 (c) 700
  7. 7.A film starts at 8:45 and ends at 10:05. How many minutes long is the film?
  8. 8.A train leaves at 8:05 and reaches the next city at 11:25. How many minutes is the journey?
  9. 9.16 + 17 =
  10. 10.225 ÷ 3 =
  11. 11.119 − 93 =
  12. 12.61 − 36 =
  13. 13.19 + 18 =
  14. 14.10% of ₹610 =
  15. 15.124 laddoos are packed in boxes of 9. How many laddoos are left over?
  16. 16.8 + 7 =
  17. 17.43 laddoos are packed in boxes of 4. How many laddoos are left over?
  18. 18.25 × 8 =
  19. 19.A train leaves at 8:35 and reaches the next city at 9:35. How many minutes is the journey?
  20. 20.110 − 78 =
  21. 21.26 + 27 =
  22. 22.10% of ₹580 =
  23. 23.25 + 26 =
  24. 24.79 + 29 =
  25. 25.56 − 21 =
  26. 26.Double 46 =
  27. 27.13 + 12 =
  28. 28.28² =
  29. 29.77 + 19 =
  30. 30.Double 41 =
  31. 31.118 − 92 =
  32. 32.16 + 15 =
  33. 33.Best estimate of 39 × 47? (a) 20000 (b) 200 (c) 2000
  34. 34.Double 25 =
  35. 35.Best estimate of 161 + 838? (a) 1000 (b) 800 (c) 1200
  36. 36.36 + 49 =
  37. 37.83 − 65 =
  38. 38.Half of 132 =
  39. 39.15 + 9 =
  40. 40.Best estimate of 205 + 409? (a) 400 (b) 600 (c) 800

Answer key

  1. 178
  2. 16
  3. 53
  4. 8
  5. 8
  6. 900
  7. 80
  8. 200
  9. 33
  10. 75
  11. 26
  12. 25
  13. 37
  14. 61
  15. 7
  16. 15
  17. 3
  18. 200
  19. 60
  20. 32
  21. 53
  22. 58
  23. 51
  24. 108
  25. 35
  26. 92
  27. 25
  28. 784
  29. 96
  30. 82
  31. 26
  32. 31
  33. 2000
  34. 50
  35. 1000
  36. 85
  37. 18
  38. 66
  39. 24
  40. 600

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