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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 148 · 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. 1.58 − 27 =
  2. 2.11² =
  3. 3.71 − 29 =
  4. 4.5% of ₹650 =
  5. 5.522 ÷ 9 =
  6. 6.11 + 12 =
  7. 7.74 + 71 =
  8. 8.96 ÷ 8 =
  9. 9.96 − 29 =
  10. 10.12 + 11 =
  11. 11.107 − 95 =
  12. 12.63 + 23 =
  13. 13.12 + 13 =
  14. 14.252 ÷ 7 =
  15. 15.25% of ₹470 =
  16. 16.203 − 184 =
  17. 17.248 ÷ 8 =
  18. 18.1025 − 984 =
  19. 19.20 + 22 =
  20. 20.1021 − 989 =
  21. 21.1007 − 981 =
  22. 22.10 + 9 =
  23. 23.72 + 78 =
  24. 24.24² =
  25. 25.70 children stand in rows of 6. How many full rows can they make?
  26. 26.7 + ? = 10
  27. 27.51 children stand in rows of 5. How many full rows can they make?
  28. 28.61 + 23 =
  29. 29.769 + 99 =
  30. 30.8 + ? = 10
  31. 31.18 + 19 =
  32. 32.108 laddoos are packed in boxes of 7. How many laddoos are left over?
  33. 33.31 + 42 =
  34. 34.Best estimate of 674 + 539? (a) 1000 (b) 1400 (c) 1200
  35. 35.71 − 19 =
  36. 36.35 × 5 =
  37. 37.31 + ? = 100
  38. 38.A film starts at 8:40 and ends at 10:30. How many minutes long is the film?
  39. 39.30 + 29 =
  40. 40.10% of ₹220 =

Answer key

  1. 31
  2. 121
  3. 42
  4. 32.5
  5. 58
  6. 23
  7. 145
  8. 12
  9. 67
  10. 23
  11. 12
  12. 86
  13. 25
  14. 36
  15. 117.5
  16. 19
  17. 31
  18. 41
  19. 42
  20. 32
  21. 26
  22. 19
  23. 150
  24. 576
  25. 11
  26. 3
  27. 10
  28. 84
  29. 868
  30. 2
  31. 37
  32. 3
  33. 73
  34. 1200
  35. 52
  36. 175
  37. 69
  38. 110
  39. 59
  40. 22

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