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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 62 · 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. 1.47 + 5 =
  2. 2.9 + 10 =
  3. 3.What is the remainder when 75 is divided by 9?
  4. 4.399 ÷ 7 =
  5. 5.101 − 83 =
  6. 6.10% of ₹220 =
  7. 7.51 × 4 =
  8. 8.19² =
  9. 9.Best estimate of 36 × 40? (a) 160 (b) 16000 (c) 1600
  10. 10.Double 37 =
  11. 11.30 + 32 =
  12. 12.You start your homework at 6:20 and finish at 7:40. How many minutes did you work?
  13. 13.201 ÷ 3 =
  14. 14.768 ÷ 8 =
  15. 15.71 + 13 =
  16. 16.567 ÷ 9 =
  17. 17.A cricket match starts at 3:20 and the first innings ends at 6:40. How many minutes did the innings last?
  18. 18.78 × 7 =
  19. 19.Best estimate of 204 + 762? (a) 800 (b) 1200 (c) 1000
  20. 20.152 ÷ 8 =
  21. 21.440 + 99 =
  22. 22.18 × 4 =
  23. 23.25 × 5 =
  24. 24.24² =
  25. 25.39 + 64 =
  26. 26.481 + 99 =
  27. 27.15 × 4 =
  28. 28.Double 29 =
  29. 29.90 − 58 =
  30. 30.50% of ₹480 =
  31. 31.738 − 99 =
  32. 32.304 ÷ 4 =
  33. 33.224 ÷ 4 =
  34. 34.184 ÷ 8 =
  35. 35.10% of ₹70 =
  36. 36.355 ÷ 5 =
  37. 37.66 + 9 =
  38. 38.616 ÷ 8 =
  39. 39.53 − 41 =
  40. 40.69 + 48 =

Answer key

  1. 52
  2. 19
  3. 3
  4. 57
  5. 18
  6. 22
  7. 204
  8. 361
  9. 1600
  10. 74
  11. 62
  12. 80
  13. 67
  14. 96
  15. 84
  16. 63
  17. 200
  18. 546
  19. 1000
  20. 19
  21. 539
  22. 72
  23. 125
  24. 576
  25. 103
  26. 580
  27. 60
  28. 58
  29. 32
  30. 240
  31. 639
  32. 76
  33. 56
  34. 23
  35. 7
  36. 71
  37. 75
  38. 77
  39. 12
  40. 117

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