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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 245 · 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.Double 33 =
  2. 2.23 + 56 =
  3. 3.41 laddoos are packed in boxes of 3. How many laddoos are left over?
  4. 4.81 × 5 =
  5. 5.4 + ? = 10
  6. 6.26² =
  7. 7.728 ÷ 8 =
  8. 8.What is the remainder when 14 is divided by 3?
  9. 9.A film starts at 2:55 and ends at 4:15. How many minutes long is the film?
  10. 10.Best estimate of 93 × 17? (a) 1800 (b) 18000 (c) 180
  11. 11.40 − 29 =
  12. 12.A train leaves at 1:35 and reaches the next city at 3:40. How many minutes is the journey?
  13. 13.140 ÷ 4 =
  14. 14.7 + 8 =
  15. 15.57 + 8 =
  16. 16.A train leaves at 5:30 and reaches the next city at 8:05. How many minutes is the journey?
  17. 17.Half of 160 =
  18. 18.A train leaves at 1:05 and reaches the next city at 2:25. How many minutes is the journey?
  19. 19.76 + 5 =
  20. 20.You buy a box of crayons for ₹27 and pay with a ₹100 note. How much change do you get, in rupees?
  21. 21.72 × 4 =
  22. 22.14 × 5 =
  23. 23.226 − 198 =
  24. 24.232 + 99 =
  25. 25.Best estimate of 88 × 91? (a) 81000 (b) 8100 (c) 810
  26. 26.A train leaves at 7:10 and reaches the next city at 8:50. How many minutes is the journey?
  27. 27.A cricket match starts at 4:55 and the first innings ends at 5:25. How many minutes did the innings last?
  28. 28.14 + 29 =
  29. 29.27 + 28 =
  30. 30.A film starts at 4:30 and ends at 6:15. How many minutes long is the film?
  31. 31.55 + 8 =
  32. 32.17² =
  33. 33.63 × 9 =
  34. 34.63 − 37 =
  35. 35.A film starts at 5:00 and ends at 5:55. How many minutes long is the film?
  36. 36.55 × 8 =
  37. 37.8 + 7 =
  38. 38.You buy a bag of mangoes for ₹64 and pay with a ₹100 note. How much change do you get, in rupees?
  39. 39.5 + 7 =
  40. 40.63 − 51 =

Answer key

  1. 66
  2. 79
  3. 2
  4. 405
  5. 6
  6. 676
  7. 91
  8. 2
  9. 80
  10. 1800
  11. 11
  12. 125
  13. 35
  14. 15
  15. 65
  16. 155
  17. 80
  18. 80
  19. 81
  20. 73
  21. 288
  22. 70
  23. 28
  24. 331
  25. 8100
  26. 100
  27. 30
  28. 43
  29. 55
  30. 105
  31. 63
  32. 289
  33. 567
  34. 26
  35. 55
  36. 440
  37. 15
  38. 36
  39. 12
  40. 12

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