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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 909 · 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.A train leaves at 2:15 and reaches the next city at 4:15. How many minutes is the journey?
  2. 2.45 + 59 =
  3. 3.40 laddoos are packed in boxes of 3. How many laddoos are left over?
  4. 4.25 + 8 =
  5. 5.Double 19 =
  6. 6.72 − 38 =
  7. 7.4 + ? = 10
  8. 8.10% of ₹70 =
  9. 9.A cricket match starts at 1:25 and the first innings ends at 2:45. How many minutes did the innings last?
  10. 10.64 − 37 =
  11. 11.99 × 4 =
  12. 12.60 + 19 =
  13. 13.42 + 59 =
  14. 14.19 + 4 =
  15. 15.25% of ₹150 =
  16. 16.15² =
  17. 17.63 − 51 =
  18. 18.5% of ₹240 =
  19. 19.36 children stand in rows of 5. How many full rows can they make?
  20. 20.7 + 6 =
  21. 21.7 + 4 =
  22. 22.66 + 5 =
  23. 23.Half of 172 =
  24. 24.77 + 6 =
  25. 25.168 ÷ 8 =
  26. 26.48 + 19 =
  27. 27.13 + 29 =
  28. 28.66 − 12 =
  29. 29.73 − 13 =
  30. 30.40 × 8 =
  31. 31.33 + 42 =
  32. 32.39 − 9 =
  33. 33.Best estimate of 92 × 29? (a) 2700 (b) 270 (c) 27000
  34. 34.You buy a water bottle for ₹80 and pay with a ₹100 note. How much change do you get, in rupees?
  35. 35.16 × 8 =
  36. 36.68 + 66 =
  37. 37.46 + 9 =
  38. 38.280 ÷ 8 =
  39. 39.16² =
  40. 40.29² =

Answer key

  1. 120
  2. 104
  3. 1
  4. 33
  5. 38
  6. 34
  7. 6
  8. 7
  9. 80
  10. 27
  11. 396
  12. 79
  13. 101
  14. 23
  15. 37.5
  16. 225
  17. 12
  18. 12
  19. 7
  20. 13
  21. 11
  22. 71
  23. 86
  24. 83
  25. 21
  26. 67
  27. 42
  28. 54
  29. 60
  30. 320
  31. 75
  32. 30
  33. 2700
  34. 20
  35. 128
  36. 134
  37. 55
  38. 35
  39. 256
  40. 841

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