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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 279 · 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. 1.123 laddoos are packed in boxes of 9. How many laddoos are left over?
  2. 2.22 × 4 =
  3. 3.85 + 21 =
  4. 4.77 + 5 =
  5. 5.12 + 11 =
  6. 6.15 + 9 =
  7. 7.Double 31 =
  8. 8.228 ÷ 3 =
  9. 9.5 + ? = 10
  10. 10.26 + ? = 100
  11. 11.70 − 19 =
  12. 12.25% of ₹610 =
  13. 13.1012 − 983 =
  14. 14.57 + 9 =
  15. 15.21² =
  16. 16.8 + 10 =
  17. 17.46 − 29 =
  18. 18.70 + 33 =
  19. 19.12 + 14 =
  20. 20.11 + 12 =
  21. 21.You start your homework at 2:15 and finish at 3:50. How many minutes did you work?
  22. 22.15² =
  23. 23.35 + 9 =
  24. 24.13 + 14 =
  25. 25.88 ÷ 8 =
  26. 26.29 × 8 =
  27. 27.Best estimate of 293 + 877? (a) 1400 (b) 1000 (c) 1200
  28. 28.6 + 8 =
  29. 29.186 ÷ 6 =
  30. 30.25% of ₹230 =
  31. 31.136 ÷ 8 =
  32. 32.27² =
  33. 33.Best estimate of 174 + 607? (a) 800 (b) 600 (c) 1000
  34. 34.1 + ? = 10
  35. 35.230 − 186 =
  36. 36.125 − 93 =
  37. 37.55 × 6 =
  38. 38.50% of ₹120 =
  39. 39.18 + 19 =
  40. 40.259 ÷ 7 =

Answer key

  1. 6
  2. 88
  3. 106
  4. 82
  5. 23
  6. 24
  7. 62
  8. 76
  9. 5
  10. 74
  11. 51
  12. 152.5
  13. 29
  14. 66
  15. 441
  16. 18
  17. 17
  18. 103
  19. 26
  20. 23
  21. 95
  22. 225
  23. 44
  24. 27
  25. 11
  26. 232
  27. 1200
  28. 14
  29. 31
  30. 57.5
  31. 17
  32. 729
  33. 800
  34. 9
  35. 44
  36. 32
  37. 330
  38. 60
  39. 37
  40. 37

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