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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 833 · 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. 1.40 + 51 =
  2. 2.13 + 19 =
  3. 3.Double 22 =
  4. 4.25% of ₹200 =
  5. 5.42 laddoos are packed in boxes of 4. How many laddoos are left over?
  6. 6.7 + 8 =
  7. 7.216 ÷ 8 =
  8. 8.116 children stand in rows of 9. How many full rows can they make?
  9. 9.11² =
  10. 10.66 − 46 =
  11. 11.Double 34 =
  12. 12.518 − 480 =
  13. 13.91 × 4 =
  14. 14.366 ÷ 6 =
  15. 15.5 + ? = 10
  16. 16.37 × 8 =
  17. 17.5% of ₹890 =
  18. 18.72 − 29 =
  19. 19.Best estimate of 501 + 656? (a) 1200 (b) 1000 (c) 1400
  20. 20.A cricket match starts at 1:25 and the first innings ends at 4:45. How many minutes did the innings last?
  21. 21.75 + 7 =
  22. 22.317 − 295 =
  23. 23.62 × 4 =
  24. 24.31 × 3 =
  25. 25.61 children stand in rows of 5. How many full rows can they make?
  26. 26.Best estimate of 22 × 62? (a) 120 (b) 1200 (c) 12000
  27. 27.What is the remainder when 58 is divided by 8?
  28. 28.Double 71 =
  29. 29.17² =
  30. 30.14² =
  31. 31.31 × 8 =
  32. 32.Half of 46 =
  33. 33.18 + 20 =
  34. 34.118 children stand in rows of 9. How many full rows can they make?
  35. 35.10% of ₹260 =
  36. 36.332 ÷ 4 =
  37. 37.59 − 39 =
  38. 38.44 + ? = 100
  39. 39.57 + 8 =
  40. 40.108 ÷ 4 =

Answer key

  1. 91
  2. 32
  3. 44
  4. 50
  5. 2
  6. 15
  7. 27
  8. 12
  9. 121
  10. 20
  11. 68
  12. 38
  13. 364
  14. 61
  15. 5
  16. 296
  17. 44.5
  18. 43
  19. 1200
  20. 200
  21. 82
  22. 22
  23. 248
  24. 93
  25. 12
  26. 1200
  27. 2
  28. 142
  29. 289
  30. 196
  31. 248
  32. 23
  33. 38
  34. 13
  35. 26
  36. 83
  37. 20
  38. 56
  39. 65
  40. 27

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