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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 413 · 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. 1.25% of ₹470 =
  2. 2.186 ÷ 3 =
  3. 3.Double 38 =
  4. 4.24 × 5 =
  5. 5.29 × 8 =
  6. 6.11 + 12 =
  7. 7.97 × 4 =
  8. 8.22 + 19 =
  9. 9.59 + 86 =
  10. 10.Best estimate of 76 × 18? (a) 160 (b) 16000 (c) 1600
  11. 11.Half of 104 =
  12. 12.7 + 8 =
  13. 13.56 × 4 =
  14. 14.90 − 61 =
  15. 15.57 + 7 =
  16. 16.57 + ? = 100
  17. 17.390 ÷ 6 =
  18. 18.32 + ? = 100
  19. 19.32 laddoos are packed in boxes of 7. How many laddoos are left over?
  20. 20.12² =
  21. 21.1004 − 984 =
  22. 22.217 − 183 =
  23. 23.27² =
  24. 24.76 laddoos are packed in boxes of 5. How many laddoos are left over?
  25. 25.24² =
  26. 26.A cricket match starts at 1:10 and the first innings ends at 1:55. How many minutes did the innings last?
  27. 27.15 × 8 =
  28. 28.74 + 9 =
  29. 29.27 + 26 =
  30. 30.Half of 26 =
  31. 31.304 ÷ 8 =
  32. 32.25² =
  33. 33.25 + 29 =
  34. 34.18² =
  35. 35.10% of ₹280 =
  36. 36.88 ÷ 4 =
  37. 37.52 × 4 =
  38. 38.43 × 4 =
  39. 39.5% of ₹150 =
  40. 40.320 ÷ 8 =

Answer key

  1. 117.5
  2. 62
  3. 76
  4. 120
  5. 232
  6. 23
  7. 388
  8. 41
  9. 145
  10. 1600
  11. 52
  12. 15
  13. 224
  14. 29
  15. 64
  16. 43
  17. 65
  18. 68
  19. 4
  20. 144
  21. 20
  22. 34
  23. 729
  24. 1
  25. 576
  26. 45
  27. 120
  28. 83
  29. 53
  30. 13
  31. 38
  32. 625
  33. 54
  34. 324
  35. 28
  36. 22
  37. 208
  38. 172
  39. 7.5
  40. 40

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