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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 568 · 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. 1.318 − 296 =
  2. 2.144 ÷ 8 =
  3. 3.15² =
  4. 4.23² =
  5. 5.264 ÷ 8 =
  6. 6.A train leaves at 2:55 and reaches the next city at 5:20. How many minutes is the journey?
  7. 7.591 + 99 =
  8. 8.97 − 56 =
  9. 9.364 + 99 =
  10. 10.59 + 3 =
  11. 11.89 + 31 =
  12. 12.35 × 8 =
  13. 13.12 × 8 =
  14. 14.10 + 11 =
  15. 15.31 + 53 =
  16. 16.17 + ? = 100
  17. 17.202 − 197 =
  18. 18.31 + 68 =
  19. 19.You buy a notebook for ₹56 and pay with a ₹100 note. How much change do you get, in rupees?
  20. 20.15 + 16 =
  21. 21.27² =
  22. 22.61 + 55 =
  23. 23.74 × 8 =
  24. 24.26 + 6 =
  25. 25.A film starts at 3:05 and ends at 4:20. How many minutes long is the film?
  26. 26.18 + 9 =
  27. 27.Half of 114 =
  28. 28.86 × 3 =
  29. 29.232 ÷ 4 =
  30. 30.130 − 98 =
  31. 31.76 − 48 =
  32. 32.29 + 3 =
  33. 33.Best estimate of 602 + 141? (a) 500 (b) 700 (c) 900
  34. 34.Double 79 =
  35. 35.220 ÷ 4 =
  36. 36.You buy a water bottle for ₹19 and a pen for ₹24. You pay with a ₹100 note. How much change do you get, in rupees?
  37. 37.28² =
  38. 38.28 + 38 =
  39. 39.117 ÷ 3 =
  40. 40.77 + 6 =

Answer key

  1. 22
  2. 18
  3. 225
  4. 529
  5. 33
  6. 145
  7. 690
  8. 41
  9. 463
  10. 62
  11. 120
  12. 280
  13. 96
  14. 21
  15. 84
  16. 83
  17. 5
  18. 99
  19. 44
  20. 31
  21. 729
  22. 116
  23. 592
  24. 32
  25. 75
  26. 27
  27. 57
  28. 258
  29. 58
  30. 32
  31. 28
  32. 32
  33. 700
  34. 158
  35. 55
  36. 57
  37. 784
  38. 66
  39. 39
  40. 83

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