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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 551 · 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. 1.496 + 99 =
  2. 2.276 ÷ 6 =
  3. 3.Best estimate of 588 + 525? (a) 900 (b) 1100 (c) 1300
  4. 4.Best estimate of 53 × 36? (a) 20000 (b) 2000 (c) 200
  5. 5.232 ÷ 8 =
  6. 6.Best estimate of 96 × 53? (a) 50000 (b) 5000 (c) 500
  7. 7.Double 45 =
  8. 8.6 + 7 =
  9. 9.9 + 11 =
  10. 10.50% of ₹380 =
  11. 11.A cricket match starts at 8:15 and the first innings ends at 10:20. How many minutes did the innings last?
  12. 12.28 + 3 =
  13. 13.A film starts at 2:35 and ends at 5:25. How many minutes long is the film?
  14. 14.52 ÷ 4 =
  15. 15.10% of ₹780 =
  16. 16.63 + 9 =
  17. 17.18² =
  18. 18.90 − 46 =
  19. 19.Best estimate of 342 + 462? (a) 800 (b) 1000 (c) 600
  20. 20.You buy a pencil box for ₹16 and a pen for ₹21. You pay with a ₹100 note. How much change do you get, in rupees?
  21. 21.189 ÷ 3 =
  22. 22.515 − 479 =
  23. 23.9 + ? = 10
  24. 24.You start your homework at 4:25 and finish at 5:55. How many minutes did you work?
  25. 25.A film starts at 3:00 and ends at 5:25. How many minutes long is the film?
  26. 26.505 − 484 =
  27. 27.A train leaves at 8:00 and reaches the next city at 9:05. How many minutes is the journey?
  28. 28.A film starts at 3:45 and ends at 5:10. How many minutes long is the film?
  29. 29.You start your homework at 8:05 and finish at 9:50. How many minutes did you work?
  30. 30.63 laddoos are packed in boxes of 4. How many laddoos are left over?
  31. 31.Double 86 =
  32. 32.Best estimate of 739 + 853? (a) 1600 (b) 1400 (c) 1800
  33. 33.176 ÷ 8 =
  34. 34.80 ÷ 4 =
  35. 35.14 + 15 =
  36. 36.5% of ₹880 =
  37. 37.5% of ₹760 =
  38. 38.A film starts at 4:45 and ends at 8:00. How many minutes long is the film?
  39. 39.6 + 8 =
  40. 40.528 − 483 =

Answer key

  1. 595
  2. 46
  3. 1100
  4. 2000
  5. 29
  6. 5000
  7. 90
  8. 13
  9. 20
  10. 190
  11. 125
  12. 31
  13. 170
  14. 13
  15. 78
  16. 72
  17. 324
  18. 44
  19. 800
  20. 63
  21. 63
  22. 36
  23. 1
  24. 90
  25. 145
  26. 21
  27. 65
  28. 85
  29. 105
  30. 3
  31. 172
  32. 1600
  33. 22
  34. 20
  35. 29
  36. 44
  37. 38
  38. 195
  39. 14
  40. 45

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