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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 830 · 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. 1.23² =
  2. 2.6 + 8 =
  3. 3.24 + 23 =
  4. 4.Half of 138 =
  5. 5.13 × 8 =
  6. 6.33 × 4 =
  7. 7.76 − 48 =
  8. 8.21 + 23 =
  9. 9.What is the remainder when 59 is divided by 4?
  10. 10.112 ÷ 8 =
  11. 11.18 × 4 =
  12. 12.63 × 4 =
  13. 13.313 − 279 =
  14. 14.696 ÷ 8 =
  15. 15.20 × 8 =
  16. 16.You start your homework at 6:15 and finish at 7:00. How many minutes did you work?
  17. 17.49 + 3 =
  18. 18.Best estimate of 251 + 575? (a) 1100 (b) 900 (c) 700
  19. 19.125 ÷ 5 =
  20. 20.Half of 82 =
  21. 21.Double 85 =
  22. 22.37 × 8 =
  23. 23.243 ÷ 3 =
  24. 24.59 − 28 =
  25. 25.54 × 4 =
  26. 26.37 × 9 =
  27. 27.497 ÷ 7 =
  28. 28.32 laddoos are packed in boxes of 6. How many laddoos are left over?
  29. 29.24 + 25 =
  30. 30.46 laddoos are packed in boxes of 6. How many laddoos are left over?
  31. 31.77 + 24 =
  32. 32.294 ÷ 6 =
  33. 33.4 + ? = 10
  34. 34.33 × 3 =
  35. 35.28 + 30 =
  36. 36.25² =
  37. 37.40 children stand in rows of 3. How many full rows can they make?
  38. 38.1026 − 988 =
  39. 39.36 × 8 =
  40. 40.A film starts at 4:50 and ends at 6:20. How many minutes long is the film?

Answer key

  1. 529
  2. 14
  3. 47
  4. 69
  5. 104
  6. 132
  7. 28
  8. 44
  9. 3
  10. 14
  11. 72
  12. 252
  13. 34
  14. 87
  15. 160
  16. 45
  17. 52
  18. 900
  19. 25
  20. 41
  21. 170
  22. 296
  23. 81
  24. 31
  25. 216
  26. 333
  27. 71
  28. 2
  29. 49
  30. 4
  31. 101
  32. 49
  33. 6
  34. 99
  35. 58
  36. 625
  37. 13
  38. 38
  39. 288
  40. 90

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