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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 316 · 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. 1.74 + 24 =
  2. 2.22 × 4 =
  3. 3.61 × 6 =
  4. 4.33 + 29 =
  5. 5.68 + 3 =
  6. 6.9 + ? = 10
  7. 7.1021 − 976 =
  8. 8.12 + 13 =
  9. 9.77 − 32 =
  10. 10.10% of ₹500 =
  11. 11.You buy a notebook for ₹15 and a pen for ₹22. You pay with a ₹100 note. How much change do you get, in rupees?
  12. 12.102 − 98 =
  13. 13.79 × 4 =
  14. 14.25% of ₹360 =
  15. 15.224 ÷ 4 =
  16. 16.664 ÷ 8 =
  17. 17.44 × 4 =
  18. 18.55 + 6 =
  19. 19.76 × 9 =
  20. 20.A cricket match starts at 7:50 and the first innings ends at 8:55. How many minutes did the innings last?
  21. 21.121 − 86 =
  22. 22.20 + 22 =
  23. 23.51 laddoos are packed in boxes of 8. How many laddoos are left over?
  24. 24.76 − 61 =
  25. 25.1 + ? = 10
  26. 26.23 + 36 =
  27. 27.65 + 6 =
  28. 28.79 − 9 =
  29. 29.19 + 20 =
  30. 30.37 + ? = 100
  31. 31.100 − 75 =
  32. 32.28 + 29 =
  33. 33.Best estimate of 93 × 69? (a) 63000 (b) 6300 (c) 630
  34. 34.636 + 99 =
  35. 35.58 − 33 =
  36. 36.61 − 36 =
  37. 37.69 × 3 =
  38. 38.17² =
  39. 39.66 + 8 =
  40. 40.96 × 5 =

Answer key

  1. 98
  2. 88
  3. 366
  4. 62
  5. 71
  6. 1
  7. 45
  8. 25
  9. 45
  10. 50
  11. 63
  12. 4
  13. 316
  14. 90
  15. 56
  16. 83
  17. 176
  18. 61
  19. 684
  20. 65
  21. 35
  22. 42
  23. 3
  24. 15
  25. 9
  26. 59
  27. 71
  28. 70
  29. 39
  30. 63
  31. 25
  32. 57
  33. 6300
  34. 735
  35. 25
  36. 25
  37. 207
  38. 289
  39. 74
  40. 480

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