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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 910 · 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. 1.25% of ₹150 =
  2. 2.Best estimate of 63 × 23? (a) 120 (b) 12000 (c) 1200
  3. 3.You buy a storybook for ₹19 and a pen for ₹38. You pay with a ₹100 note. How much change do you get, in rupees?
  4. 4.15² =
  5. 5.What is the remainder when 53 is divided by 8?
  6. 6.Best estimate of 17 × 84? (a) 1600 (b) 16000 (c) 160
  7. 7.Double 54 =
  8. 8.18 + 20 =
  9. 9.You buy a notebook for ₹38 and pay with a ₹100 note. How much change do you get, in rupees?
  10. 10.85 + 22 =
  11. 11.203 − 193 =
  12. 12.Best estimate of 396 + 161? (a) 400 (b) 800 (c) 600
  13. 13.51 × 4 =
  14. 14.7 + ? = 10
  15. 15.You start your homework at 3:25 and finish at 4:50. How many minutes did you work?
  16. 16.16 + 15 =
  17. 17.55 children stand in rows of 8. How many full rows can they make?
  18. 18.25% of ₹200 =
  19. 19.82 + 69 =
  20. 20.36 + ? = 100
  21. 21.You buy a notebook for ₹47 and pay with a ₹100 note. How much change do you get, in rupees?
  22. 22.You buy a cricket ball for ₹37 and a pen for ₹16. You pay with a ₹100 note. How much change do you get, in rupees?
  23. 23.67 − 26 =
  24. 24.Best estimate of 98 × 20? (a) 20000 (b) 200 (c) 2000
  25. 25.You start your homework at 6:35 and finish at 9:30. How many minutes did you work?
  26. 26.A film starts at 2:35 and ends at 4:20. How many minutes long is the film?
  27. 27.You buy a kite for ₹264 and pay with a ₹500 note. How much change do you get, in rupees?
  28. 28.A cricket match starts at 2:05 and the first innings ends at 3:40. How many minutes did the innings last?
  29. 29.What is the remainder when 21 is divided by 4?
  30. 30.Double 63 =
  31. 31.Half of 94 =
  32. 32.7 + 6 =
  33. 33.A film starts at 2:35 and ends at 4:35. How many minutes long is the film?
  34. 34.48 + 6 =
  35. 35.4 + ? = 10
  36. 36.56 + 5 =
  37. 37.75 + 8 =
  38. 38.You buy a bag of mangoes for ₹30 and a pen for ₹30. You pay with a ₹100 note. How much change do you get, in rupees?
  39. 39.92 − 12 =
  40. 40.98 × 5 =

Answer key

  1. 37.5
  2. 1200
  3. 43
  4. 225
  5. 5
  6. 1600
  7. 108
  8. 38
  9. 62
  10. 107
  11. 10
  12. 600
  13. 204
  14. 3
  15. 85
  16. 31
  17. 6
  18. 50
  19. 151
  20. 64
  21. 53
  22. 47
  23. 41
  24. 2000
  25. 175
  26. 105
  27. 236
  28. 95
  29. 1
  30. 126
  31. 47
  32. 13
  33. 120
  34. 54
  35. 6
  36. 61
  37. 83
  38. 40
  39. 80
  40. 490

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