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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 17 · 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. 1.524 − 496 =
  2. 2.15 + 16 =
  3. 3.A film starts at 4:35 and ends at 7:25. How many minutes long is the film?
  4. 4.15² =
  5. 5.87 × 9 =
  6. 6.62 + ? = 100
  7. 7.54 + 19 =
  8. 8.35 × 4 =
  9. 9.85 + 61 =
  10. 10.What is the remainder when 108 is divided by 7?
  11. 11.64 − 19 =
  12. 12.16 × 9 =
  13. 13.Double 86 =
  14. 14.61 × 4 =
  15. 15.35 × 8 =
  16. 16.17 + 16 =
  17. 17.69 + 71 =
  18. 18.65 − 29 =
  19. 19.8 + 9 =
  20. 20.10% of ₹340 =
  21. 21.63 ÷ 3 =
  22. 22.21 × 8 =
  23. 23.6 + 7 =
  24. 24.31 + 88 =
  25. 25.307 − 283 =
  26. 26.Best estimate of 317 + 675? (a) 800 (b) 1200 (c) 1000
  27. 27.72 − 47 =
  28. 28.75 + 9 =
  29. 29.Best estimate of 31 × 46? (a) 15000 (b) 1500 (c) 150
  30. 30.Half of 70 =
  31. 31.55 children stand in rows of 9. How many full rows can they make?
  32. 32.51 − 29 =
  33. 33.554 + 99 =
  34. 34.30 × 8 =
  35. 35.87 − 78 =
  36. 36.97 × 9 =
  37. 37.78 − 46 =
  38. 38.19 × 4 =
  39. 39.63 × 7 =
  40. 40.639 ÷ 9 =

Answer key

  1. 28
  2. 31
  3. 170
  4. 225
  5. 783
  6. 38
  7. 73
  8. 140
  9. 146
  10. 3
  11. 45
  12. 144
  13. 172
  14. 244
  15. 280
  16. 33
  17. 140
  18. 36
  19. 17
  20. 34
  21. 21
  22. 168
  23. 13
  24. 119
  25. 24
  26. 1000
  27. 25
  28. 84
  29. 1500
  30. 35
  31. 6
  32. 22
  33. 653
  34. 240
  35. 9
  36. 873
  37. 32
  38. 76
  39. 441
  40. 71

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