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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 433 · 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. 1.48 ÷ 4 =
  2. 2.40 × 8 =
  3. 3.22 × 8 =
  4. 4.83 + 61 =
  5. 5.26 + 7 =
  6. 6.67 − 19 =
  7. 7.53 − 41 =
  8. 8.27 × 9 =
  9. 9.35 × 7 =
  10. 10.32 × 8 =
  11. 11.15 − 9 =
  12. 12.81 − 64 =
  13. 13.64 + 44 =
  14. 14.75 + 9 =
  15. 15.35 + 6 =
  16. 16.49 + 29 =
  17. 17.28 + 30 =
  18. 18.92 − 15 =
  19. 19.You buy a storybook for ₹444 and pay with a ₹500 note. How much change do you get, in rupees?
  20. 20.18 + 5 =
  21. 21.Best estimate of 467 + 564? (a) 1300 (b) 1100 (c) 900
  22. 22.23² =
  23. 23.58 laddoos are packed in boxes of 9. How many laddoos are left over?
  24. 24.85 + 7 =
  25. 25.26 + 28 =
  26. 26.50% of ₹650 =
  27. 27.118 + 99 =
  28. 28.Best estimate of 714 + 484? (a) 1400 (b) 1200 (c) 1000
  29. 29.57 × 4 =
  30. 30.You start your homework at 8:15 and finish at 9:05. How many minutes did you work?
  31. 31.10% of ₹450 =
  32. 32.552 ÷ 6 =
  33. 33.Best estimate of 144 + 542? (a) 800 (b) 400 (c) 600
  34. 34.288 ÷ 8 =
  35. 35.37 + 18 =
  36. 36.55 − 31 =
  37. 37.153 ÷ 3 =
  38. 38.60 − 29 =
  39. 39.89 − 53 =
  40. 40.435 ÷ 5 =

Answer key

  1. 12
  2. 320
  3. 176
  4. 144
  5. 33
  6. 48
  7. 12
  8. 243
  9. 245
  10. 256
  11. 6
  12. 17
  13. 108
  14. 84
  15. 41
  16. 78
  17. 58
  18. 77
  19. 56
  20. 23
  21. 1100
  22. 529
  23. 4
  24. 92
  25. 54
  26. 325
  27. 217
  28. 1200
  29. 228
  30. 50
  31. 45
  32. 92
  33. 600
  34. 36
  35. 55
  36. 24
  37. 51
  38. 31
  39. 36
  40. 87

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