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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 515 · 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. 1.89 + 9 =
  2. 2.What is the remainder when 62 is divided by 8?
  3. 3.14 + 19 =
  4. 4.180 ÷ 4 =
  5. 5.98 × 5 =
  6. 6.A film starts at 8:10 and ends at 10:10. How many minutes long is the film?
  7. 7.You buy a notebook for ₹81 and pay with a ₹100 note. How much change do you get, in rupees?
  8. 8.27 − 9 =
  9. 9.7 + ? = 10
  10. 10.319 − 283 =
  11. 11.1030 − 994 =
  12. 12.Half of 178 =
  13. 13.11² =
  14. 14.8 + ? = 10
  15. 15.18 + 5 =
  16. 16.47 + 4 =
  17. 17.70 − 41 =
  18. 18.39 − 29 =
  19. 19.25% of ₹790 =
  20. 20.58 − 15 =
  21. 21.429 − 99 =
  22. 22.19 + 3 =
  23. 23.184 ÷ 8 =
  24. 24.27 × 8 =
  25. 25.46 + 58 =
  26. 26.25% of ₹430 =
  27. 27.10% of ₹350 =
  28. 28.Best estimate of 656 + 152? (a) 700 (b) 900 (c) 1100
  29. 29.46 − 29 =
  30. 30.13 + 14 =
  31. 31.69 + 29 =
  32. 32.Half of 156 =
  33. 33.52 + 42 =
  34. 34.12 + 13 =
  35. 35.84 + 51 =
  36. 36.56 − 41 =
  37. 37.Double 63 =
  38. 38.5 + 8 =
  39. 39.95 ÷ 5 =
  40. 40.9 + 11 =

Answer key

  1. 98
  2. 6
  3. 33
  4. 45
  5. 490
  6. 120
  7. 19
  8. 18
  9. 3
  10. 36
  11. 36
  12. 89
  13. 121
  14. 2
  15. 23
  16. 51
  17. 29
  18. 10
  19. 197.5
  20. 43
  21. 330
  22. 22
  23. 23
  24. 216
  25. 104
  26. 107.5
  27. 35
  28. 900
  29. 17
  30. 27
  31. 98
  32. 78
  33. 94
  34. 25
  35. 135
  36. 15
  37. 126
  38. 13
  39. 19
  40. 20

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