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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 459 · 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. 1.17 × 8 =
  2. 2.162 ÷ 3 =
  3. 3.25 × 8 =
  4. 4.80 + ? = 100
  5. 5.240 ÷ 8 =
  6. 6.65 − 25 =
  7. 7.56 ÷ 4 =
  8. 8.41 × 7 =
  9. 9.29² =
  10. 10.A cricket match starts at 5:10 and the first innings ends at 7:55. How many minutes did the innings last?
  11. 11.Best estimate of 858 + 631? (a) 1500 (b) 1700 (c) 1300
  12. 12.92 − 36 =
  13. 13.5% of ₹620 =
  14. 14.You buy a water bottle for ₹264 and pay with a ₹500 note. How much change do you get, in rupees?
  15. 15.27 + ? = 100
  16. 16.314 − 278 =
  17. 17.110 − 64 =
  18. 18.549 ÷ 9 =
  19. 19.What is the remainder when 81 is divided by 7?
  20. 20.368 ÷ 4 =
  21. 21.168 ÷ 4 =
  22. 22.A film starts at 5:30 and ends at 7:05. How many minutes long is the film?
  23. 23.49 + 4 =
  24. 24.37 × 4 =
  25. 25.84 children stand in rows of 9. How many full rows can they make?
  26. 26.329 − 294 =
  27. 27.57 + 4 =
  28. 28.296 ÷ 8 =
  29. 29.13 + 15 =
  30. 30.5% of ₹260 =
  31. 31.28 + 30 =
  32. 32.96 ÷ 4 =
  33. 33.54 − 13 =
  34. 34.21² =
  35. 35.13 + 12 =
  36. 36.8 + 9 =
  37. 37.77 + ? = 100
  38. 38.81 ÷ 3 =
  39. 39.285 ÷ 5 =
  40. 40.20 × 8 =

Answer key

  1. 136
  2. 54
  3. 200
  4. 20
  5. 30
  6. 40
  7. 14
  8. 287
  9. 841
  10. 165
  11. 1500
  12. 56
  13. 31
  14. 236
  15. 73
  16. 36
  17. 46
  18. 61
  19. 4
  20. 92
  21. 42
  22. 95
  23. 53
  24. 148
  25. 9
  26. 35
  27. 61
  28. 37
  29. 28
  30. 13
  31. 58
  32. 24
  33. 41
  34. 441
  35. 25
  36. 17
  37. 23
  38. 27
  39. 57
  40. 160

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