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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 30 · 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. 1.26 + ? = 100
  2. 2.55 + 67 =
  3. 3.228 ÷ 6 =
  4. 4.55 laddoos are packed in boxes of 8. How many laddoos are left over?
  5. 5.93 − 71 =
  6. 6.Best estimate of 18 × 74? (a) 14000 (b) 1400 (c) 140
  7. 7.15 + 8 =
  8. 8.17 + 18 =
  9. 9.70 + 61 =
  10. 10.You buy a storybook for ₹72 and pay with a ₹100 note. How much change do you get, in rupees?
  11. 11.10% of ₹900 =
  12. 12.82 − 16 =
  13. 13.18 + 4 =
  14. 14.Half of 44 =
  15. 15.87 × 3 =
  16. 16.24 + 26 =
  17. 17.You start your homework at 5:10 and finish at 5:40. How many minutes did you work?
  18. 18.Best estimate of 538 + 257? (a) 600 (b) 1000 (c) 800
  19. 19.9 + 11 =
  20. 20.72 + 43 =
  21. 21.40 + 19 =
  22. 22.89 + ? = 100
  23. 23.192 ÷ 4 =
  24. 24.66 − 19 =
  25. 25.5% of ₹420 =
  26. 26.46 + 6 =
  27. 27.Double 45 =
  28. 28.58 × 7 =
  29. 29.11 + 13 =
  30. 30.75 + 72 =
  31. 31.62 − 46 =
  32. 32.72 + 72 =
  33. 33.83 + 31 =
  34. 34.15 + 16 =
  35. 35.76 + 5 =
  36. 36.12 + 14 =
  37. 37.10% of ₹780 =
  38. 38.195 ÷ 5 =
  39. 39.63 × 4 =
  40. 40.77 − 9 =

Answer key

  1. 74
  2. 122
  3. 38
  4. 7
  5. 22
  6. 1400
  7. 23
  8. 35
  9. 131
  10. 28
  11. 90
  12. 66
  13. 22
  14. 22
  15. 261
  16. 50
  17. 30
  18. 800
  19. 20
  20. 115
  21. 59
  22. 11
  23. 48
  24. 47
  25. 21
  26. 52
  27. 90
  28. 406
  29. 24
  30. 147
  31. 16
  32. 144
  33. 114
  34. 31
  35. 81
  36. 26
  37. 78
  38. 39
  39. 252
  40. 68

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