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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 532 · 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. 1.17² =
  2. 2.50% of ₹140 =
  3. 3.17 + 8 =
  4. 4.54 − 46 =
  5. 5.Half of 82 =
  6. 6.You buy a storybook for ₹27 and pay with a ₹100 note. How much change do you get, in rupees?
  7. 7.68 + 4 =
  8. 8.A train leaves at 3:20 and reaches the next city at 4:40. How many minutes is the journey?
  9. 9.88 children stand in rows of 6. How many full rows can they make?
  10. 10.23² =
  11. 11.70 + 29 =
  12. 12.77 − 56 =
  13. 13.You buy a box of crayons for ₹41 and a pen for ₹29. You pay with a ₹100 note. How much change do you get, in rupees?
  14. 14.30 + 29 =
  15. 15.Best estimate of 13 × 42? (a) 4000 (b) 40 (c) 400
  16. 16.A film starts at 7:45 and ends at 8:45. How many minutes long is the film?
  17. 17.6 + 8 =
  18. 18.88 + 28 =
  19. 19.80 + 26 =
  20. 20.15 × 4 =
  21. 21.A film starts at 4:25 and ends at 7:20. How many minutes long is the film?
  22. 22.You buy a pencil box for ₹72 and pay with a ₹100 note. How much change do you get, in rupees?
  23. 23.416 ÷ 8 =
  24. 24.56 ÷ 4 =
  25. 25.43 + 62 =
  26. 26.You buy a pencil box for ₹69 and pay with a ₹100 note. How much change do you get, in rupees?
  27. 27.Best estimate of 76 × 47? (a) 400 (b) 4000 (c) 40000
  28. 28.Best estimate of 837 + 802? (a) 1800 (b) 1600 (c) 1400
  29. 29.25% of ₹830 =
  30. 30.131 laddoos are packed in boxes of 9. How many laddoos are left over?
  31. 31.A train leaves at 8:30 and reaches the next city at 9:20. How many minutes is the journey?
  32. 32.Best estimate of 93 × 54? (a) 450 (b) 4500 (c) 45000
  33. 33.You start your homework at 7:10 and finish at 9:45. How many minutes did you work?
  34. 34.42 + 51 =
  35. 35.84 ÷ 4 =
  36. 36.88 − 42 =
  37. 37.25 + 8 =
  38. 38.12 + ? = 100
  39. 39.26 + 57 =
  40. 40.23 + ? = 100

Answer key

  1. 289
  2. 70
  3. 25
  4. 8
  5. 41
  6. 73
  7. 72
  8. 80
  9. 14
  10. 529
  11. 99
  12. 21
  13. 30
  14. 59
  15. 400
  16. 60
  17. 14
  18. 116
  19. 106
  20. 60
  21. 175
  22. 28
  23. 52
  24. 14
  25. 105
  26. 31
  27. 4000
  28. 1600
  29. 207.5
  30. 5
  31. 50
  32. 4500
  33. 155
  34. 93
  35. 21
  36. 46
  37. 33
  38. 88
  39. 83
  40. 77

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