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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 710 · 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. 1.68 + ? = 100
  2. 2.24 + 29 =
  3. 3.38 × 4 =
  4. 4.91 − 29 =
  5. 5.24 + 25 =
  6. 6.39 + 4 =
  7. 7.148 ÷ 4 =
  8. 8.A cricket match starts at 3:35 and the first innings ends at 6:55. How many minutes did the innings last?
  9. 9.300 ÷ 4 =
  10. 10.7 + ? = 10
  11. 11.104 ÷ 8 =
  12. 12.103 − 78 =
  13. 13.77 + ? = 100
  14. 14.168 ÷ 4 =
  15. 15.75 − 39 =
  16. 16.314 − 297 =
  17. 17.234 ÷ 6 =
  18. 18.29 + 28 =
  19. 19.You start your homework at 8:50 and finish at 10:20. How many minutes did you work?
  20. 20.10% of ₹770 =
  21. 21.You buy a pencil box for ₹20 and a pen for ₹40. You pay with a ₹100 note. How much change do you get, in rupees?
  22. 22.5% of ₹330 =
  23. 23.Double 96 =
  24. 24.1001 − 975 =
  25. 25.575 − 99 =
  26. 26.27 × 8 =
  27. 27.25% of ₹690 =
  28. 28.26 + ? = 100
  29. 29.Double 56 =
  30. 30.29 + 46 =
  31. 31.87 − 72 =
  32. 32.57 + 21 =
  33. 33.68 − 33 =
  34. 34.12 + 14 =
  35. 35.307 − 286 =
  36. 36.83 + 26 =
  37. 37.75 + 9 =
  38. 38.245 ÷ 7 =
  39. 39.14 − 9 =
  40. 40.85 + 6 =

Answer key

  1. 32
  2. 53
  3. 152
  4. 62
  5. 49
  6. 43
  7. 37
  8. 200
  9. 75
  10. 3
  11. 13
  12. 25
  13. 23
  14. 42
  15. 36
  16. 17
  17. 39
  18. 57
  19. 90
  20. 77
  21. 40
  22. 16.5
  23. 192
  24. 26
  25. 476
  26. 216
  27. 172.5
  28. 74
  29. 112
  30. 75
  31. 15
  32. 78
  33. 35
  34. 26
  35. 21
  36. 109
  37. 84
  38. 35
  39. 5
  40. 91

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