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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 414 · 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. 1.10% of ₹520 =
  2. 2.23 + 29 =
  3. 3.60 + 31 =
  4. 4.60 + 19 =
  5. 5.5% of ₹720 =
  6. 6.You buy a cricket ball for ₹88 and pay with a ₹100 note. How much change do you get, in rupees?
  7. 7.63 + ? = 100
  8. 8.518 ÷ 7 =
  9. 9.67 laddoos are packed in boxes of 5. How many laddoos are left over?
  10. 10.205 ÷ 5 =
  11. 11.5% of ₹830 =
  12. 12.3 + ? = 10
  13. 13.8 + ? = 10
  14. 14.22 + 24 =
  15. 15.26 + 34 =
  16. 16.Half of 68 =
  17. 17.32 − 9 =
  18. 18.A train leaves at 1:05 and reaches the next city at 3:35. How many minutes is the journey?
  19. 19.A film starts at 2:00 and ends at 4:45. How many minutes long is the film?
  20. 20.A film starts at 2:10 and ends at 3:20. How many minutes long is the film?
  21. 21.What is the remainder when 139 is divided by 9?
  22. 22.10% of ₹750 =
  23. 23.25 + 27 =
  24. 24.106 − 66 =
  25. 25.180 ÷ 5 =
  26. 26.12² =
  27. 27.47 + 7 =
  28. 28.Best estimate of 334 + 509? (a) 1000 (b) 600 (c) 800
  29. 29.9 + 11 =
  30. 30.Best estimate of 78 × 19? (a) 16000 (b) 160 (c) 1600
  31. 31.248 ÷ 8 =
  32. 32.39 + ? = 100
  33. 33.78 + 7 =
  34. 34.Half of 152 =
  35. 35.64 × 4 =
  36. 36.17 + 19 =
  37. 37.25 × 8 =
  38. 38.Double 41 =
  39. 39.Half of 30 =
  40. 40.Best estimate of 39 × 87? (a) 360 (b) 3600 (c) 36000

Answer key

  1. 52
  2. 52
  3. 91
  4. 79
  5. 36
  6. 12
  7. 37
  8. 74
  9. 2
  10. 41
  11. 41.5
  12. 7
  13. 2
  14. 46
  15. 60
  16. 34
  17. 23
  18. 150
  19. 165
  20. 70
  21. 4
  22. 75
  23. 52
  24. 40
  25. 36
  26. 144
  27. 54
  28. 800
  29. 20
  30. 1600
  31. 31
  32. 61
  33. 85
  34. 76
  35. 256
  36. 36
  37. 200
  38. 82
  39. 15
  40. 3600

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