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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 247 · 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. 1.16² =
  2. 2.You buy a water bottle for ₹16 and a pen for ₹19. You pay with a ₹100 note. How much change do you get, in rupees?
  3. 3.53 − 29 =
  4. 4.23 + 24 =
  5. 5.13 × 4 =
  6. 6.1024 − 986 =
  7. 7.335 ÷ 5 =
  8. 8.73 + 89 =
  9. 9.41 × 8 =
  10. 10.What is the remainder when 45 is divided by 4?
  11. 11.51 children stand in rows of 5. How many full rows can they make?
  12. 12.32 × 3 =
  13. 13.A train leaves at 3:55 and reaches the next city at 5:20. How many minutes is the journey?
  14. 14.You start your homework at 4:55 and finish at 6:00. How many minutes did you work?
  15. 15.41 + 29 =
  16. 16.89 − 78 =
  17. 17.72 + 81 =
  18. 18.8 + 9 =
  19. 19.21 + 35 =
  20. 20.Best estimate of 36 × 87? (a) 36000 (b) 3600 (c) 360
  21. 21.Half of 156 =
  22. 22.63 − 24 =
  23. 23.280 ÷ 8 =
  24. 24.4 + ? = 10
  25. 25.26 + 8 =
  26. 26.78 + 7 =
  27. 27.Best estimate of 796 + 628? (a) 1400 (b) 1600 (c) 1200
  28. 28.You buy a storybook for ₹41 and a pen for ₹39. You pay with a ₹100 note. How much change do you get, in rupees?
  29. 29.A cricket match starts at 2:50 and the first innings ends at 3:45. How many minutes did the innings last?
  30. 30.9 + ? = 10
  31. 31.35 + 8 =
  32. 32.1013 − 987 =
  33. 33.You buy a kite for ₹11 and a pen for ₹20. You pay with a ₹100 note. How much change do you get, in rupees?
  34. 34.316 − 286 =
  35. 35.58 laddoos are packed in boxes of 7. How many laddoos are left over?
  36. 36.53 laddoos are packed in boxes of 6. How many laddoos are left over?
  37. 37.Half of 148 =
  38. 38.You buy a water bottle for ₹410 and pay with a ₹500 note. How much change do you get, in rupees?
  39. 39.30 × 4 =
  40. 40.11² =

Answer key

  1. 256
  2. 65
  3. 24
  4. 47
  5. 52
  6. 38
  7. 67
  8. 162
  9. 328
  10. 1
  11. 10
  12. 96
  13. 85
  14. 65
  15. 70
  16. 11
  17. 153
  18. 17
  19. 56
  20. 3600
  21. 78
  22. 39
  23. 35
  24. 6
  25. 34
  26. 85
  27. 1400
  28. 20
  29. 55
  30. 1
  31. 43
  32. 26
  33. 69
  34. 30
  35. 2
  36. 5
  37. 74
  38. 90
  39. 120
  40. 121

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