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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 231 · 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. 1.31 + ? = 100
  2. 2.What is the remainder when 37 is divided by 3?
  3. 3.33 + 9 =
  4. 4.17 × 5 =
  5. 5.A film starts at 8:35 and ends at 11:10. How many minutes long is the film?
  6. 6.Best estimate of 545 + 170? (a) 700 (b) 500 (c) 900
  7. 7.13 + 14 =
  8. 8.36 + ? = 100
  9. 9.86 − 36 =
  10. 10.522 − 486 =
  11. 11.44 × 4 =
  12. 12.96 ÷ 8 =
  13. 13.69 + 8 =
  14. 14.85 − 27 =
  15. 15.9 + 2 =
  16. 16.23 + 22 =
  17. 17.50% of ₹140 =
  18. 18.Half of 198 =
  19. 19.1 + ? = 10
  20. 20.59 + 9 =
  21. 21.46 laddoos are packed in boxes of 8. How many laddoos are left over?
  22. 22.Double 72 =
  23. 23.59 + 37 =
  24. 24.A film starts at 1:00 and ends at 1:40. How many minutes long is the film?
  25. 25.3 + ? = 10
  26. 26.38 + 19 =
  27. 27.175 ÷ 5 =
  28. 28.408 ÷ 8 =
  29. 29.45 + 6 =
  30. 30.67 + 9 =
  31. 31.5% of ₹630 =
  32. 32.57 + 65 =
  33. 33.93 − 48 =
  34. 34.Best estimate of 26 × 18? (a) 60 (b) 600 (c) 6000
  35. 35.What is the remainder when 29 is divided by 7?
  36. 36.77 × 9 =
  37. 37.45 laddoos are packed in boxes of 7. How many laddoos are left over?
  38. 38.112 ÷ 8 =
  39. 39.12 × 8 =
  40. 40.20 × 8 =

Answer key

  1. 69
  2. 1
  3. 42
  4. 85
  5. 155
  6. 700
  7. 27
  8. 64
  9. 50
  10. 36
  11. 176
  12. 12
  13. 77
  14. 58
  15. 11
  16. 45
  17. 70
  18. 99
  19. 9
  20. 68
  21. 6
  22. 144
  23. 96
  24. 40
  25. 7
  26. 57
  27. 35
  28. 51
  29. 51
  30. 76
  31. 31.5
  32. 122
  33. 45
  34. 600
  35. 1
  36. 693
  37. 3
  38. 14
  39. 96
  40. 160

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