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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 95 · 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. 1.7 + ? = 10
  2. 2.52 − 26 =
  3. 3.11 + 10 =
  4. 4.You buy a box of crayons for ₹19 and a pen for ₹31. You pay with a ₹100 note. How much change do you get, in rupees?
  5. 5.88 + 82 =
  6. 6.122 − 96 =
  7. 7.49 + 51 =
  8. 8.25² =
  9. 9.66 + 63 =
  10. 10.50% of ₹840 =
  11. 11.95 − 81 =
  12. 12.78 − 64 =
  13. 13.22² =
  14. 14.3 + ? = 10
  15. 15.10% of ₹770 =
  16. 16.Half of 152 =
  17. 17.320 ÷ 8 =
  18. 18.85 − 23 =
  19. 19.Double 32 =
  20. 20.Double 79 =
  21. 21.Double 19 =
  22. 22.45 + 14 =
  23. 23.184 ÷ 4 =
  24. 24.55 + 9 =
  25. 25.87 + 7 =
  26. 26.87 + ? = 100
  27. 27.25% of ₹410 =
  28. 28.Best estimate of 42 × 94? (a) 36000 (b) 360 (c) 3600
  29. 29.106 − 83 =
  30. 30.46 + 9 =
  31. 31.205 − 197 =
  32. 32.Double 95 =
  33. 33.Double 85 =
  34. 34.58 − 31 =
  35. 35.25% of ₹790 =
  36. 36.You buy a cricket ball for ₹77 and pay with a ₹100 note. How much change do you get, in rupees?
  37. 37.372 ÷ 6 =
  38. 38.You buy a water bottle for ₹37 and a pen for ₹20. You pay with a ₹100 note. How much change do you get, in rupees?
  39. 39.1003 − 985 =
  40. 40.33 × 7 =

Answer key

  1. 3
  2. 26
  3. 21
  4. 50
  5. 170
  6. 26
  7. 100
  8. 625
  9. 129
  10. 420
  11. 14
  12. 14
  13. 484
  14. 7
  15. 77
  16. 76
  17. 40
  18. 62
  19. 64
  20. 158
  21. 38
  22. 59
  23. 46
  24. 64
  25. 94
  26. 13
  27. 102.5
  28. 3600
  29. 23
  30. 55
  31. 8
  32. 190
  33. 170
  34. 27
  35. 197.5
  36. 23
  37. 62
  38. 43
  39. 18
  40. 231

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