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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 627 · 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. 1.10% of ₹730 =
  2. 2.A train leaves at 4:50 and reaches the next city at 7:10. How many minutes is the journey?
  3. 3.72 − 25 =
  4. 4.5% of ₹100 =
  5. 5.522 − 491 =
  6. 6.74 − 34 =
  7. 7.21 × 8 =
  8. 8.24 + 23 =
  9. 9.14 children stand in rows of 3. How many full rows can they make?
  10. 10.71 + 29 =
  11. 11.105 ÷ 5 =
  12. 12.62 − 21 =
  13. 13.18² =
  14. 14.540 − 99 =
  15. 15.Best estimate of 56 × 26? (a) 18000 (b) 180 (c) 1800
  16. 16.92 − 81 =
  17. 17.17 + 4 =
  18. 18.14² =
  19. 19.51 × 4 =
  20. 20.21 + 85 =
  21. 21.30 + 79 =
  22. 22.306 − 296 =
  23. 23.99 − 19 =
  24. 24.13 + 14 =
  25. 25.27 − 9 =
  26. 26.38 + 3 =
  27. 27.96 − 77 =
  28. 28.24² =
  29. 29.A film starts at 8:05 and ends at 8:30. How many minutes long is the film?
  30. 30.27 + 28 =
  31. 31.Half of 68 =
  32. 32.5% of ₹310 =
  33. 33.49 × 4 =
  34. 34.Best estimate of 66 × 44? (a) 280 (b) 2800 (c) 28000
  35. 35.17 + 19 =
  36. 36.57 + 64 =
  37. 37.223 − 197 =
  38. 38.35 + 6 =
  39. 39.Best estimate of 80 × 42? (a) 32000 (b) 3200 (c) 320
  40. 40.Double 94 =

Answer key

  1. 73
  2. 140
  3. 47
  4. 5
  5. 31
  6. 40
  7. 168
  8. 47
  9. 4
  10. 100
  11. 21
  12. 41
  13. 324
  14. 441
  15. 1800
  16. 11
  17. 21
  18. 196
  19. 204
  20. 106
  21. 109
  22. 10
  23. 80
  24. 27
  25. 18
  26. 41
  27. 19
  28. 576
  29. 25
  30. 55
  31. 34
  32. 15.5
  33. 196
  34. 2800
  35. 36
  36. 121
  37. 26
  38. 41
  39. 3200
  40. 188

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