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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 101 · 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. 1.120 ÷ 8 =
  2. 2.13 children stand in rows of 3. How many full rows can they make?
  3. 3.50% of ₹350 =
  4. 4.329 − 289 =
  5. 5.Half of 96 =
  6. 6.403 − 99 =
  7. 7.Half of 72 =
  8. 8.180 ÷ 4 =
  9. 9.89 − 32 =
  10. 10.48 + 9 =
  11. 11.625 + 99 =
  12. 12.85 − 54 =
  13. 13.40 × 8 =
  14. 14.5% of ₹170 =
  15. 15.9 + ? = 10
  16. 16.Best estimate of 21 × 79? (a) 16000 (b) 1600 (c) 160
  17. 17.50 + ? = 100
  18. 18.45 + ? = 100
  19. 19.31 + 62 =
  20. 20.10% of ₹700 =
  21. 21.16 × 4 =
  22. 22.15 + 8 =
  23. 23.19² =
  24. 24.Half of 60 =
  25. 25.21 + 23 =
  26. 26.245 ÷ 5 =
  27. 27.75 − 31 =
  28. 28.9 + 10 =
  29. 29.54 − 18 =
  30. 30.Half of 176 =
  31. 31.89 + ? = 100
  32. 32.15 + 16 =
  33. 33.56 − 27 =
  34. 34.98 × 5 =
  35. 35.17 × 8 =
  36. 36.66 × 7 =
  37. 37.10 + 11 =
  38. 38.81 × 3 =
  39. 39.15 + 9 =
  40. 40.A train leaves at 1:10 and reaches the next city at 3:45. How many minutes is the journey?

Answer key

  1. 15
  2. 4
  3. 175
  4. 40
  5. 48
  6. 304
  7. 36
  8. 45
  9. 57
  10. 57
  11. 724
  12. 31
  13. 320
  14. 8.5
  15. 1
  16. 1600
  17. 50
  18. 55
  19. 93
  20. 70
  21. 64
  22. 23
  23. 361
  24. 30
  25. 44
  26. 49
  27. 44
  28. 19
  29. 36
  30. 88
  31. 11
  32. 31
  33. 29
  34. 490
  35. 136
  36. 462
  37. 21
  38. 243
  39. 24
  40. 155

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