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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 667 · 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. 1.14 + ? = 100
  2. 2.93 − 60 =
  3. 3.59 − 48 =
  4. 4.8 + ? = 10
  5. 5.21² =
  6. 6.65 + ? = 100
  7. 7.58 − 24 =
  8. 8.16 + 7 =
  9. 9.79 + ? = 100
  10. 10.50% of ₹770 =
  11. 11.5% of ₹200 =
  12. 12.73 + 13 =
  13. 13.519 − 492 =
  14. 14.You buy a cricket ball for ₹20 and a pen for ₹23. You pay with a ₹100 note. How much change do you get, in rupees?
  15. 15.86 + 56 =
  16. 16.73 − 44 =
  17. 17.5% of ₹230 =
  18. 18.You buy a box of crayons for ₹26 and pay with a ₹100 note. How much change do you get, in rupees?
  19. 19.10% of ₹40 =
  20. 20.83 + ? = 100
  21. 21.77 + 9 =
  22. 22.84 ÷ 4 =
  23. 23.55 − 42 =
  24. 24.86 + ? = 100
  25. 25.50 − 19 =
  26. 26.Double 23 =
  27. 27.8 + 9 =
  28. 28.104 ÷ 4 =
  29. 29.A cricket match starts at 6:05 and the first innings ends at 9:20. How many minutes did the innings last?
  30. 30.79 + 47 =
  31. 31.You buy a storybook for ₹29 and pay with a ₹100 note. How much change do you get, in rupees?
  32. 32.21 × 5 =
  33. 33.1025 − 981 =
  34. 34.85 − 9 =
  35. 35.83 − 71 =
  36. 36.36 × 4 =
  37. 37.38 + 8 =
  38. 38.15² =
  39. 39.99 − 38 =
  40. 40.78 ÷ 6 =

Answer key

  1. 86
  2. 33
  3. 11
  4. 2
  5. 441
  6. 35
  7. 34
  8. 23
  9. 21
  10. 385
  11. 10
  12. 86
  13. 27
  14. 57
  15. 142
  16. 29
  17. 11.5
  18. 74
  19. 4
  20. 17
  21. 86
  22. 21
  23. 13
  24. 14
  25. 31
  26. 46
  27. 17
  28. 26
  29. 195
  30. 126
  31. 71
  32. 105
  33. 44
  34. 76
  35. 12
  36. 144
  37. 46
  38. 225
  39. 61
  40. 13

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