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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 604 · 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. 1.165 ÷ 3 =
  2. 2.You start your homework at 6:35 and finish at 8:25. How many minutes did you work?
  3. 3.You buy a water bottle for ₹197 and pay with a ₹500 note. How much change do you get, in rupees?
  4. 4.Best estimate of 96 × 32? (a) 3000 (b) 30000 (c) 300
  5. 5.79 + 3 =
  6. 6.88 ÷ 4 =
  7. 7.A film starts at 2:05 and ends at 4:55. How many minutes long is the film?
  8. 8.66 + 6 =
  9. 9.82 × 5 =
  10. 10.67 − 25 =
  11. 11.17² =
  12. 12.Half of 88 =
  13. 13.Half of 176 =
  14. 14.124 ÷ 4 =
  15. 15.You buy a pencil box for ₹11 and a pen for ₹35. You pay with a ₹100 note. How much change do you get, in rupees?
  16. 16.15 × 7 =
  17. 17.52 − 41 =
  18. 18.48 + 5 =
  19. 19.7 + ? = 10
  20. 20.204 − 178 =
  21. 21.You buy a notebook for ₹15 and pay with a ₹100 note. How much change do you get, in rupees?
  22. 22.77 children stand in rows of 5. How many full rows can they make?
  23. 23.80 ÷ 4 =
  24. 24.236 ÷ 4 =
  25. 25.49 + 2 =
  26. 26.Best estimate of 29 × 92? (a) 270 (b) 2700 (c) 27000
  27. 27.516 ÷ 6 =
  28. 28.A cricket match starts at 2:45 and the first innings ends at 3:20. How many minutes did the innings last?
  29. 29.176 ÷ 8 =
  30. 30.15² =
  31. 31.A film starts at 7:30 and ends at 10:45. How many minutes long is the film?
  32. 32.80 − 46 =
  33. 33.96 − 21 =
  34. 34.47 + ? = 100
  35. 35.61 + 9 =
  36. 36.18 + ? = 100
  37. 37.16 laddoos are packed in boxes of 3. How many laddoos are left over?
  38. 38.67 × 8 =
  39. 39.53 × 8 =
  40. 40.You start your homework at 5:30 and finish at 6:05. How many minutes did you work?

Answer key

  1. 55
  2. 110
  3. 303
  4. 3000
  5. 82
  6. 22
  7. 170
  8. 72
  9. 410
  10. 42
  11. 289
  12. 44
  13. 88
  14. 31
  15. 54
  16. 105
  17. 11
  18. 53
  19. 3
  20. 26
  21. 85
  22. 15
  23. 20
  24. 59
  25. 51
  26. 2700
  27. 86
  28. 35
  29. 22
  30. 225
  31. 195
  32. 34
  33. 75
  34. 53
  35. 70
  36. 82
  37. 1
  38. 536
  39. 424
  40. 35

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