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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 5 · 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. 1.10% of ₹770 =
  2. 2.160 ÷ 8 =
  3. 3.Half of 34 =
  4. 4.108 ÷ 4 =
  5. 5.1030 − 994 =
  6. 6.86 + 33 =
  7. 7.84 ÷ 4 =
  8. 8.Double 62 =
  9. 9.You buy a pencil box for ₹383 and pay with a ₹500 note. How much change do you get, in rupees?
  10. 10.26 children stand in rows of 5. How many full rows can they make?
  11. 11.77 − 24 =
  12. 12.19 + 20 =
  13. 13.Best estimate of 744 + 381? (a) 1300 (b) 1100 (c) 900
  14. 14.1025 − 991 =
  15. 15.25² =
  16. 16.29 + 28 =
  17. 17.70 + 18 =
  18. 18.77 − 58 =
  19. 19.497 ÷ 7 =
  20. 20.32 − 9 =
  21. 21.64 + 59 =
  22. 22.Half of 166 =
  23. 23.36 × 8 =
  24. 24.49 × 5 =
  25. 25.13 + 14 =
  26. 26.You start your homework at 7:40 and finish at 9:25. How many minutes did you work?
  27. 27.508 − 490 =
  28. 28.Double 31 =
  29. 29.13² =
  30. 30.Half of 76 =
  31. 31.Best estimate of 791 + 507? (a) 1300 (b) 1100 (c) 1500
  32. 32.45 ÷ 3 =
  33. 33.14² =
  34. 34.38 + 32 =
  35. 35.76 ÷ 4 =
  36. 36.42 − 9 =
  37. 37.609 ÷ 7 =
  38. 38.15² =
  39. 39.65 + 9 =
  40. 40.15 + 8 =

Answer key

  1. 77
  2. 20
  3. 17
  4. 27
  5. 36
  6. 119
  7. 21
  8. 124
  9. 117
  10. 5
  11. 53
  12. 39
  13. 1100
  14. 34
  15. 625
  16. 57
  17. 88
  18. 19
  19. 71
  20. 23
  21. 123
  22. 83
  23. 288
  24. 245
  25. 27
  26. 105
  27. 18
  28. 62
  29. 169
  30. 38
  31. 1300
  32. 15
  33. 196
  34. 70
  35. 19
  36. 33
  37. 87
  38. 225
  39. 74
  40. 23

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