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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 38 · 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. 1.19² =
  2. 2.67 + 6 =
  3. 3.14 + 19 =
  4. 4.You buy a bag of mangoes for ₹278 and pay with a ₹500 note. How much change do you get, in rupees?
  5. 5.46 − 29 =
  6. 6.Half of 164 =
  7. 7.76 ÷ 4 =
  8. 8.1005 − 986 =
  9. 9.You buy a box of crayons for ₹179 and pay with a ₹500 note. How much change do you get, in rupees?
  10. 10.A train leaves at 5:35 and reaches the next city at 7:05. How many minutes is the journey?
  11. 11.22 + ? = 100
  12. 12.45 + ? = 100
  13. 13.31 − 19 =
  14. 14.A train leaves at 4:55 and reaches the next city at 6:30. How many minutes is the journey?
  15. 15.44 × 4 =
  16. 16.What is the remainder when 36 is divided by 5?
  17. 17.29 + 88 =
  18. 18.34 × 8 =
  19. 19.15 + 8 =
  20. 20.65 + 6 =
  21. 21.Double 81 =
  22. 22.87 − 39 =
  23. 23.10 + 9 =
  24. 24.45 × 5 =
  25. 25.28 + 4 =
  26. 26.You buy a box of crayons for ₹48 and pay with a ₹100 note. How much change do you get, in rupees?
  27. 27.19 + 4 =
  28. 28.Best estimate of 68 × 51? (a) 3500 (b) 35000 (c) 350
  29. 29.584 ÷ 8 =
  30. 30.7 + ? = 10
  31. 31.What is the remainder when 107 is divided by 7?
  32. 32.75 + ? = 100
  33. 33.Best estimate of 289 + 548? (a) 800 (b) 600 (c) 1000
  34. 34.25 + 59 =
  35. 35.Double 18 =
  36. 36.A film starts at 5:05 and ends at 7:55. How many minutes long is the film?
  37. 37.60 − 12 =
  38. 38.10% of ₹160 =
  39. 39.32 − 29 =
  40. 40.284 ÷ 4 =

Answer key

  1. 361
  2. 73
  3. 33
  4. 222
  5. 17
  6. 82
  7. 19
  8. 19
  9. 321
  10. 90
  11. 78
  12. 55
  13. 12
  14. 95
  15. 176
  16. 1
  17. 117
  18. 272
  19. 23
  20. 71
  21. 162
  22. 48
  23. 19
  24. 225
  25. 32
  26. 52
  27. 23
  28. 3500
  29. 73
  30. 3
  31. 2
  32. 25
  33. 800
  34. 84
  35. 36
  36. 170
  37. 48
  38. 16
  39. 3
  40. 71

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