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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 808 · 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. 1.207 ÷ 9 =
  2. 2.57 × 4 =
  3. 3.Half of 34 =
  4. 4.50% of ₹730 =
  5. 5.23 + 24 =
  6. 6.25% of ₹700 =
  7. 7.352 ÷ 4 =
  8. 8.505 − 498 =
  9. 9.27 + 26 =
  10. 10.61 − 41 =
  11. 11.13 + 12 =
  12. 12.67 + 29 =
  13. 13.165 ÷ 5 =
  14. 14.69 − 32 =
  15. 15.31 + 19 =
  16. 16.Best estimate of 56 × 69? (a) 42000 (b) 4200 (c) 420
  17. 17.You buy a notebook for ₹43 and pay with a ₹100 note. How much change do you get, in rupees?
  18. 18.16² =
  19. 19.121 − 81 =
  20. 20.76 ÷ 4 =
  21. 21.1 + ? = 10
  22. 22.24 × 8 =
  23. 23.88 + 9 =
  24. 24.58 − 9 =
  25. 25.Best estimate of 203 + 683? (a) 1100 (b) 900 (c) 700
  26. 26.89 − 19 =
  27. 27.A film starts at 4:20 and ends at 7:40. How many minutes long is the film?
  28. 28.135 ÷ 3 =
  29. 29.124 ÷ 4 =
  30. 30.58 + 9 =
  31. 31.93 − 17 =
  32. 32.25% of ₹70 =
  33. 33.55 + 7 =
  34. 34.125 laddoos are packed in boxes of 9. How many laddoos are left over?
  35. 35.8 + 10 =
  36. 36.81 × 3 =
  37. 37.Half of 136 =
  38. 38.52 − 34 =
  39. 39.70 + 32 =
  40. 40.55 − 13 =

Answer key

  1. 23
  2. 228
  3. 17
  4. 365
  5. 47
  6. 175
  7. 88
  8. 7
  9. 53
  10. 20
  11. 25
  12. 96
  13. 33
  14. 37
  15. 50
  16. 4200
  17. 57
  18. 256
  19. 40
  20. 19
  21. 9
  22. 192
  23. 97
  24. 49
  25. 900
  26. 70
  27. 200
  28. 45
  29. 31
  30. 67
  31. 76
  32. 17.5
  33. 62
  34. 8
  35. 18
  36. 243
  37. 68
  38. 18
  39. 102
  40. 42

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