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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 888 · 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. 1.27 × 4 =
  2. 2.19² =
  3. 3.91 × 4 =
  4. 4.693 ÷ 7 =
  5. 5.You buy a bag of mangoes for ₹202 and pay with a ₹500 note. How much change do you get, in rupees?
  6. 6.89 − 76 =
  7. 7.70 × 4 =
  8. 8.17² =
  9. 9.128 ÷ 8 =
  10. 10.14 + 15 =
  11. 11.Double 36 =
  12. 12.Best estimate of 229 + 131? (a) 500 (b) 100 (c) 300
  13. 13.24 × 9 =
  14. 14.Double 17 =
  15. 15.5% of ₹330 =
  16. 16.15² =
  17. 17.21 + 23 =
  18. 18.23 children stand in rows of 4. How many full rows can they make?
  19. 19.Half of 112 =
  20. 20.84 − 52 =
  21. 21.8 + 10 =
  22. 22.Best estimate of 486 + 745? (a) 1400 (b) 1000 (c) 1200
  23. 23.86 − 33 =
  24. 24.52 + ? = 100
  25. 25.Double 33 =
  26. 26.39 + 8 =
  27. 27.13 × 8 =
  28. 28.69 − 29 =
  29. 29.23² =
  30. 30.39 + 9 =
  31. 31.200 ÷ 8 =
  32. 32.28 + 12 =
  33. 33.2 + ? = 10
  34. 34.A film starts at 6:10 and ends at 6:40. How many minutes long is the film?
  35. 35.106 − 78 =
  36. 36.Best estimate of 155 + 572? (a) 800 (b) 1000 (c) 600
  37. 37.6 + ? = 10
  38. 38.56 + 6 =
  39. 39.10 + 9 =
  40. 40.82 − 34 =

Answer key

  1. 108
  2. 361
  3. 364
  4. 99
  5. 298
  6. 13
  7. 280
  8. 289
  9. 16
  10. 29
  11. 72
  12. 300
  13. 216
  14. 34
  15. 16.5
  16. 225
  17. 44
  18. 5
  19. 56
  20. 32
  21. 18
  22. 1200
  23. 53
  24. 48
  25. 66
  26. 47
  27. 104
  28. 40
  29. 529
  30. 48
  31. 25
  32. 40
  33. 8
  34. 30
  35. 28
  36. 800
  37. 4
  38. 62
  39. 19
  40. 48

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