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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 9 · 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. 1.50 + 73 =
  2. 2.27 + 69 =
  3. 3.18 + ? = 100
  4. 4.37 + 59 =
  5. 5.27 + 43 =
  6. 6.72 − 13 =
  7. 7.A train leaves at 8:10 and reaches the next city at 8:45. How many minutes is the journey?
  8. 8.316 − 292 =
  9. 9.You buy a box of crayons for ₹18 and a pen for ₹28. You pay with a ₹100 note. How much change do you get, in rupees?
  10. 10.58 − 29 =
  11. 11.507 − 479 =
  12. 12.10% of ₹760 =
  13. 13.21² =
  14. 14.You start your homework at 2:55 and finish at 3:55. How many minutes did you work?
  15. 15.13 + 29 =
  16. 16.168 ÷ 4 =
  17. 17.A film starts at 4:10 and ends at 7:30. How many minutes long is the film?
  18. 18.56 − 38 =
  19. 19.54 × 7 =
  20. 20.7 + ? = 10
  21. 21.76 + 6 =
  22. 22.88 + 75 =
  23. 23.6 + 7 =
  24. 24.35 + 39 =
  25. 25.88 + 24 =
  26. 26.192 ÷ 8 =
  27. 27.17 × 8 =
  28. 28.53 children stand in rows of 6. How many full rows can they make?
  29. 29.12 + ? = 100
  30. 30.10% of ₹460 =
  31. 31.23² =
  32. 32.33 + 19 =
  33. 33.Best estimate of 76 × 97? (a) 8000 (b) 80000 (c) 800
  34. 34.16 × 4 =
  35. 35.53 − 37 =
  36. 36.16² =
  37. 37.14² =
  38. 38.427 ÷ 7 =
  39. 39.226 − 181 =
  40. 40.98 − 81 =

Answer key

  1. 123
  2. 96
  3. 82
  4. 96
  5. 70
  6. 59
  7. 35
  8. 24
  9. 54
  10. 29
  11. 28
  12. 76
  13. 441
  14. 60
  15. 42
  16. 42
  17. 200
  18. 18
  19. 378
  20. 3
  21. 82
  22. 163
  23. 13
  24. 74
  25. 112
  26. 24
  27. 136
  28. 8
  29. 88
  30. 46
  31. 529
  32. 52
  33. 8000
  34. 64
  35. 16
  36. 256
  37. 196
  38. 61
  39. 45
  40. 17

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