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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 944 · 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. 1.128 ÷ 8 =
  2. 2.21 + 23 =
  3. 3.What is the remainder when 121 is divided by 8?
  4. 4.137 laddoos are packed in boxes of 9. How many laddoos are left over?
  5. 5.21 + ? = 100
  6. 6.45 + 6 =
  7. 7.15² =
  8. 8.Half of 76 =
  9. 9.14 × 4 =
  10. 10.85 + 31 =
  11. 11.13 + 19 =
  12. 12.Double 84 =
  13. 13.43 − 19 =
  14. 14.30 × 4 =
  15. 15.Half of 108 =
  16. 16.25 × 8 =
  17. 17.35 + 9 =
  18. 18.87 + 68 =
  19. 19.Best estimate of 175 + 618? (a) 1000 (b) 800 (c) 600
  20. 20.15 + 7 =
  21. 21.23 + 31 =
  22. 22.50% of ₹850 =
  23. 23.A film starts at 8:40 and ends at 10:50. How many minutes long is the film?
  24. 24.396 ÷ 9 =
  25. 25.6 + ? = 10
  26. 26.5 + ? = 10
  27. 27.73 + ? = 100
  28. 28.23 + 24 =
  29. 29.457 + 99 =
  30. 30.507 − 492 =
  31. 31.8 + 3 =
  32. 32.1 + ? = 10
  33. 33.5 + 9 =
  34. 34.65 + 9 =
  35. 35.Half of 138 =
  36. 36.100 − 29 =
  37. 37.126 ÷ 7 =
  38. 38.What is the remainder when 95 is divided by 9?
  39. 39.30 × 8 =
  40. 40.18 × 4 =

Answer key

  1. 16
  2. 44
  3. 1
  4. 2
  5. 79
  6. 51
  7. 225
  8. 38
  9. 56
  10. 116
  11. 32
  12. 168
  13. 24
  14. 120
  15. 54
  16. 200
  17. 44
  18. 155
  19. 800
  20. 22
  21. 54
  22. 425
  23. 130
  24. 44
  25. 4
  26. 5
  27. 27
  28. 47
  29. 556
  30. 15
  31. 11
  32. 9
  33. 14
  34. 74
  35. 69
  36. 71
  37. 18
  38. 5
  39. 240
  40. 72

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