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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 709 · 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. 1.75 + 74 =
  2. 2.Half of 78 =
  3. 3.5 + ? = 10
  4. 4.59 + 6 =
  5. 5.50% of ₹190 =
  6. 6.92 − 61 =
  7. 7.77 + 29 =
  8. 8.86 − 28 =
  9. 9.24 + 21 =
  10. 10.45 + 8 =
  11. 11.425 ÷ 5 =
  12. 12.6 + ? = 10
  13. 13.29 + 31 =
  14. 14.Half of 142 =
  15. 15.37 + 6 =
  16. 16.156 ÷ 4 =
  17. 17.88 ÷ 4 =
  18. 18.38 × 8 =
  19. 19.Double 39 =
  20. 20.34 children stand in rows of 6. How many full rows can they make?
  21. 21.23 + 24 =
  22. 22.64 × 3 =
  23. 23.What is the remainder when 142 is divided by 9?
  24. 24.648 ÷ 8 =
  25. 25.15 + 17 =
  26. 26.84 ÷ 6 =
  27. 27.674 + 99 =
  28. 28.What is the remainder when 57 is divided by 4?
  29. 29.104 ÷ 4 =
  30. 30.54 − 28 =
  31. 31.8 + 9 =
  32. 32.37 + 71 =
  33. 33.25% of ₹660 =
  34. 34.118 − 79 =
  35. 35.136 ÷ 4 =
  36. 36.5% of ₹40 =
  37. 37.85 × 3 =
  38. 38.196 ÷ 4 =
  39. 39.12 + 13 =
  40. 40.23 × 8 =

Answer key

  1. 149
  2. 39
  3. 5
  4. 65
  5. 95
  6. 31
  7. 106
  8. 58
  9. 45
  10. 53
  11. 85
  12. 4
  13. 60
  14. 71
  15. 43
  16. 39
  17. 22
  18. 304
  19. 78
  20. 5
  21. 47
  22. 192
  23. 7
  24. 81
  25. 32
  26. 14
  27. 773
  28. 1
  29. 26
  30. 26
  31. 17
  32. 108
  33. 165
  34. 39
  35. 34
  36. 2
  37. 255
  38. 49
  39. 25
  40. 184

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