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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 125 · 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. 1.26 × 8 =
  2. 2.11 + 12 =
  3. 3.18 + 19 =
  4. 4.91 × 8 =
  5. 5.20 + ? = 100
  6. 6.37 × 8 =
  7. 7.47 + 22 =
  8. 8.52 × 5 =
  9. 9.62 − 15 =
  10. 10.68 + 5 =
  11. 11.97 − 18 =
  12. 12.Double 91 =
  13. 13.39 + 7 =
  14. 14.6 + 8 =
  15. 15.22 + 18 =
  16. 16.13² =
  17. 17.23 + 9 =
  18. 18.50% of ₹240 =
  19. 19.606 − 99 =
  20. 20.200 ÷ 8 =
  21. 21.50% of ₹260 =
  22. 22.93 − 29 =
  23. 23.10% of ₹580 =
  24. 24.50% of ₹490 =
  25. 25.58 + 9 =
  26. 26.You buy a cricket ball for ₹124 and pay with a ₹500 note. How much change do you get, in rupees?
  27. 27.Double 61 =
  28. 28.23² =
  29. 29.83 + ? = 100
  30. 30.72 + 19 =
  31. 31.306 ÷ 6 =
  32. 32.128 − 76 =
  33. 33.A film starts at 4:55 and ends at 5:45. How many minutes long is the film?
  34. 34.5 + ? = 10
  35. 35.96 ÷ 6 =
  36. 36.16 × 8 =
  37. 37.8 + ? = 10
  38. 38.11² =
  39. 39.10% of ₹470 =
  40. 40.84 + ? = 100

Answer key

  1. 208
  2. 23
  3. 37
  4. 728
  5. 80
  6. 296
  7. 69
  8. 260
  9. 47
  10. 73
  11. 79
  12. 182
  13. 46
  14. 14
  15. 40
  16. 169
  17. 32
  18. 120
  19. 507
  20. 25
  21. 130
  22. 64
  23. 58
  24. 245
  25. 67
  26. 376
  27. 122
  28. 529
  29. 17
  30. 91
  31. 51
  32. 52
  33. 50
  34. 5
  35. 16
  36. 128
  37. 2
  38. 121
  39. 47
  40. 16

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