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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 325 · 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. 1.18 × 4 =
  2. 2.Half of 60 =
  3. 3.48 + 7 =
  4. 4.Best estimate of 413 + 189? (a) 600 (b) 400 (c) 800
  5. 5.27 + 9 =
  6. 6.You buy a water bottle for ₹21 and a pen for ₹13. You pay with a ₹100 note. How much change do you get, in rupees?
  7. 7.10% of ₹60 =
  8. 8.71 − 38 =
  9. 9.16² =
  10. 10.64 + 19 =
  11. 11.23 + 22 =
  12. 12.10% of ₹440 =
  13. 13.9 + 8 =
  14. 14.9 + ? = 10
  15. 15.Best estimate of 20 × 36? (a) 800 (b) 80 (c) 8000
  16. 16.12 + 13 =
  17. 17.71 + 22 =
  18. 18.162 ÷ 3 =
  19. 19.17 + 7 =
  20. 20.1005 − 982 =
  21. 21.19 + ? = 100
  22. 22.49 + 7 =
  23. 23.49 + 8 =
  24. 24.Half of 132 =
  25. 25.46 + 7 =
  26. 26.16 × 8 =
  27. 27.You buy a pencil box for ₹90 and pay with a ₹100 note. How much change do you get, in rupees?
  28. 28.92 ÷ 4 =
  29. 29.21 + ? = 100
  30. 30.18 + 17 =
  31. 31.100 − 78 =
  32. 32.86 × 4 =
  33. 33.111 − 77 =
  34. 34.26² =
  35. 35.31 × 4 =
  36. 36.10 + 12 =
  37. 37.5% of ₹670 =
  38. 38.37 + 62 =
  39. 39.A film starts at 8:15 and ends at 9:25. How many minutes long is the film?
  40. 40.15 + 14 =

Answer key

  1. 72
  2. 30
  3. 55
  4. 600
  5. 36
  6. 66
  7. 6
  8. 33
  9. 256
  10. 83
  11. 45
  12. 44
  13. 17
  14. 1
  15. 800
  16. 25
  17. 93
  18. 54
  19. 24
  20. 23
  21. 81
  22. 56
  23. 57
  24. 66
  25. 53
  26. 128
  27. 10
  28. 23
  29. 79
  30. 35
  31. 22
  32. 344
  33. 34
  34. 676
  35. 124
  36. 22
  37. 33.5
  38. 99
  39. 70
  40. 29

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