← Mixed mental challenge lesson New set →

Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 363 · 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. 1.12 + 13 =
  2. 2.58 − 47 =
  3. 3.72 + 61 =
  4. 4.5% of ₹900 =
  5. 5.11² =
  6. 6.Half of 172 =
  7. 7.15 + 29 =
  8. 8.A cricket match starts at 3:30 and the first innings ends at 4:35. How many minutes did the innings last?
  9. 9.519 − 491 =
  10. 10.Best estimate of 26 × 30? (a) 9000 (b) 900 (c) 90
  11. 11.79 − 31 =
  12. 12.You buy a kite for ₹11 and a pen for ₹13. You pay with a ₹100 note. How much change do you get, in rupees?
  13. 13.61 × 8 =
  14. 14.17 + 18 =
  15. 15.202 − 187 =
  16. 16.661 − 99 =
  17. 17.55 − 22 =
  18. 18.22 + 23 =
  19. 19.79 − 23 =
  20. 20.32 + ? = 100
  21. 21.Half of 144 =
  22. 22.Double 38 =
  23. 23.81 × 5 =
  24. 24.26² =
  25. 25.19 + 20 =
  26. 26.17 + 16 =
  27. 27.1012 − 975 =
  28. 28.27 + 41 =
  29. 29.12² =
  30. 30.108 ÷ 3 =
  31. 31.38 × 7 =
  32. 32.35 + ? = 100
  33. 33.82 − 68 =
  34. 34.29 + 28 =
  35. 35.12 + 14 =
  36. 36.16² =
  37. 37.86 + ? = 100
  38. 38.A train leaves at 1:35 and reaches the next city at 3:05. How many minutes is the journey?
  39. 39.20 + 21 =
  40. 40.702 ÷ 9 =

Answer key

  1. 25
  2. 11
  3. 133
  4. 45
  5. 121
  6. 86
  7. 44
  8. 65
  9. 28
  10. 900
  11. 48
  12. 76
  13. 488
  14. 35
  15. 15
  16. 562
  17. 33
  18. 45
  19. 56
  20. 68
  21. 72
  22. 76
  23. 405
  24. 676
  25. 39
  26. 33
  27. 37
  28. 68
  29. 144
  30. 36
  31. 266
  32. 65
  33. 14
  34. 57
  35. 26
  36. 256
  37. 14
  38. 90
  39. 41
  40. 78

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