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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 476 · 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. 1.22² =
  2. 2.319 − 293 =
  3. 3.17 × 7 =
  4. 4.57 + 9 =
  5. 5.A cricket match starts at 1:55 and the first innings ends at 3:05. How many minutes did the innings last?
  6. 6.A train leaves at 3:00 and reaches the next city at 3:40. How many minutes is the journey?
  7. 7.172 ÷ 4 =
  8. 8.4 + ? = 10
  9. 9.55 × 4 =
  10. 10.45 + ? = 100
  11. 11.52 − 42 =
  12. 12.1030 − 992 =
  13. 13.A train leaves at 6:50 and reaches the next city at 7:50. How many minutes is the journey?
  14. 14.321 − 288 =
  15. 15.5% of ₹150 =
  16. 16.39 × 6 =
  17. 17.5 + ? = 10
  18. 18.200 ÷ 8 =
  19. 19.16² =
  20. 20.42 ÷ 3 =
  21. 21.45 − 9 =
  22. 22.92 ÷ 4 =
  23. 23.10% of ₹670 =
  24. 24.Best estimate of 226 + 433? (a) 400 (b) 800 (c) 600
  25. 25.Half of 152 =
  26. 26.21² =
  27. 27.304 ÷ 8 =
  28. 28.21 + 20 =
  29. 29.16 − 9 =
  30. 30.107 − 57 =
  31. 31.83 − 77 =
  32. 32.29² =
  33. 33.86 − 69 =
  34. 34.306 ÷ 6 =
  35. 35.501 − 492 =
  36. 36.1 + ? = 10
  37. 37.Half of 78 =
  38. 38.23 + 9 =
  39. 39.76 − 29 =
  40. 40.Best estimate of 38 × 24? (a) 8000 (b) 800 (c) 80

Answer key

  1. 484
  2. 26
  3. 119
  4. 66
  5. 70
  6. 40
  7. 43
  8. 6
  9. 220
  10. 55
  11. 10
  12. 38
  13. 60
  14. 33
  15. 7.5
  16. 234
  17. 5
  18. 25
  19. 256
  20. 14
  21. 36
  22. 23
  23. 67
  24. 600
  25. 76
  26. 441
  27. 38
  28. 41
  29. 7
  30. 50
  31. 6
  32. 841
  33. 17
  34. 51
  35. 9
  36. 9
  37. 39
  38. 32
  39. 47
  40. 800

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