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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 50 · 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.You buy a water bottle for ₹193 and pay with a ₹500 note. How much change do you get, in rupees?
  2. 2.18² =
  3. 3.92 laddoos are packed in boxes of 9. How many laddoos are left over?
  4. 4.16² =
  5. 5.819 ÷ 9 =
  6. 6.23 + 24 =
  7. 7.1007 − 991 =
  8. 8.100 − 29 =
  9. 9.23 + 22 =
  10. 10.62 laddoos are packed in boxes of 4. How many laddoos are left over?
  11. 11.23 + 57 =
  12. 12.28 × 4 =
  13. 13.6 + ? = 10
  14. 14.20 + ? = 100
  15. 15.57 × 7 =
  16. 16.Best estimate of 151 + 718? (a) 900 (b) 1100 (c) 700
  17. 17.23 + 25 =
  18. 18.50% of ₹520 =
  19. 19.Double 18 =
  20. 20.120 ÷ 8 =
  21. 21.Best estimate of 849 + 683? (a) 1300 (b) 1500 (c) 1700
  22. 22.27 + 29 =
  23. 23.A cricket match starts at 5:30 and the first innings ends at 6:45. How many minutes did the innings last?
  24. 24.79 + 3 =
  25. 25.Half of 156 =
  26. 26.64 + 53 =
  27. 27.Half of 110 =
  28. 28.184 ÷ 4 =
  29. 29.310 − 287 =
  30. 30.48 + ? = 100
  31. 31.68 + 9 =
  32. 32.50% of ₹690 =
  33. 33.32 − 9 =
  34. 34.1 + ? = 10
  35. 35.17² =
  36. 36.10% of ₹300 =
  37. 37.Half of 170 =
  38. 38.38 × 4 =
  39. 39.108 − 79 =
  40. 40.120 ÷ 4 =

Answer key

  1. 307
  2. 324
  3. 2
  4. 256
  5. 91
  6. 47
  7. 16
  8. 71
  9. 45
  10. 2
  11. 80
  12. 112
  13. 4
  14. 80
  15. 399
  16. 900
  17. 48
  18. 260
  19. 36
  20. 15
  21. 1500
  22. 56
  23. 75
  24. 82
  25. 78
  26. 117
  27. 55
  28. 46
  29. 23
  30. 52
  31. 77
  32. 345
  33. 23
  34. 9
  35. 289
  36. 30
  37. 85
  38. 152
  39. 29
  40. 30

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