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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 800 · 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. 1.623 ÷ 7 =
  2. 2.26² =
  3. 3.25 + 9 =
  4. 4.41 × 3 =
  5. 5.23 + ? = 100
  6. 6.95 × 3 =
  7. 7.126 ÷ 3 =
  8. 8.30 × 4 =
  9. 9.84 × 9 =
  10. 10.744 ÷ 8 =
  11. 11.1001 − 976 =
  12. 12.51 × 4 =
  13. 13.Double 62 =
  14. 14.73 children stand in rows of 5. How many full rows can they make?
  15. 15.You buy a pencil box for ₹242 and pay with a ₹500 note. How much change do you get, in rupees?
  16. 16.514 − 487 =
  17. 17.Best estimate of 20 × 23? (a) 4000 (b) 400 (c) 40
  18. 18.25% of ₹340 =
  19. 19.52 + 46 =
  20. 20.48 + 69 =
  21. 21.49 + 58 =
  22. 22.Best estimate of 34 × 96? (a) 3000 (b) 300 (c) 30000
  23. 23.Half of 92 =
  24. 24.A film starts at 7:30 and ends at 8:50. How many minutes long is the film?
  25. 25.111 − 75 =
  26. 26.26 + ? = 100
  27. 27.4 + ? = 10
  28. 28.232 ÷ 8 =
  29. 29.69 + 5 =
  30. 30.23² =
  31. 31.74 × 5 =
  32. 32.25% of ₹90 =
  33. 33.59 + 5 =
  34. 34.11² =
  35. 35.5% of ₹550 =
  36. 36.5 + ? = 10
  37. 37.63 − 44 =
  38. 38.28 + 7 =
  39. 39.1026 − 977 =
  40. 40.31 × 6 =

Answer key

  1. 89
  2. 676
  3. 34
  4. 123
  5. 77
  6. 285
  7. 42
  8. 120
  9. 756
  10. 93
  11. 25
  12. 204
  13. 124
  14. 14
  15. 258
  16. 27
  17. 400
  18. 85
  19. 98
  20. 117
  21. 107
  22. 3000
  23. 46
  24. 80
  25. 36
  26. 74
  27. 6
  28. 29
  29. 74
  30. 529
  31. 370
  32. 22.5
  33. 64
  34. 121
  35. 27.5
  36. 5
  37. 19
  38. 35
  39. 49
  40. 186

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