← Mixed mental challenge lesson New set →

Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 868 · 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. 1.30 + ? = 100
  2. 2.20 + 21 =
  3. 3.46 + ? = 100
  4. 4.15 + 8 =
  5. 5.194 + 99 =
  6. 6.85 × 6 =
  7. 7.25 + 51 =
  8. 8.68 + 6 =
  9. 9.12 + ? = 100
  10. 10.129 children stand in rows of 9. How many full rows can they make?
  11. 11.144 ÷ 6 =
  12. 12.62 − 37 =
  13. 13.13 + 9 =
  14. 14.Best estimate of 46 × 26? (a) 1500 (b) 15000 (c) 150
  15. 15.257 − 99 =
  16. 16.77 + 7 =
  17. 17.79 − 28 =
  18. 18.21 × 6 =
  19. 19.A film starts at 2:45 and ends at 5:15. How many minutes long is the film?
  20. 20.17² =
  21. 21.13 + ? = 100
  22. 22.755 − 99 =
  23. 23.87 + 4 =
  24. 24.108 − 71 =
  25. 25.304 ÷ 8 =
  26. 26.A film starts at 1:25 and ends at 4:05. How many minutes long is the film?
  27. 27.61 × 7 =
  28. 28.58 − 45 =
  29. 29.582 ÷ 6 =
  30. 30.9 + 8 =
  31. 31.You start your homework at 3:20 and finish at 5:20. How many minutes did you work?
  32. 32.23² =
  33. 33.232 ÷ 8 =
  34. 34.56 + 6 =
  35. 35.5% of ₹830 =
  36. 36.15 + 7 =
  37. 37.16 + ? = 100
  38. 38.27 + 29 =
  39. 39.100 ÷ 4 =
  40. 40.8 + ? = 10

Answer key

  1. 70
  2. 41
  3. 54
  4. 23
  5. 293
  6. 510
  7. 76
  8. 74
  9. 88
  10. 14
  11. 24
  12. 25
  13. 22
  14. 1500
  15. 158
  16. 84
  17. 51
  18. 126
  19. 150
  20. 289
  21. 87
  22. 656
  23. 91
  24. 37
  25. 38
  26. 160
  27. 427
  28. 13
  29. 97
  30. 17
  31. 120
  32. 529
  33. 29
  34. 62
  35. 41.5
  36. 22
  37. 84
  38. 56
  39. 25
  40. 2

Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths