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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 678 · 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.A film starts at 3:05 and ends at 4:20. How many minutes long is the film?
  2. 2.456 ÷ 6 =
  3. 3.13 + 15 =
  4. 4.37 children stand in rows of 6. How many full rows can they make?
  5. 5.You buy a box of crayons for ₹91 and pay with a ₹100 note. How much change do you get, in rupees?
  6. 6.18 + ? = 100
  7. 7.You buy a box of crayons for ₹26 and a pen for ₹20. You pay with a ₹100 note. How much change do you get, in rupees?
  8. 8.Half of 120 =
  9. 9.21 × 4 =
  10. 10.92 − 27 =
  11. 11.37 + 19 =
  12. 12.Best estimate of 30 × 22? (a) 60 (b) 600 (c) 6000
  13. 13.What is the remainder when 44 is divided by 9?
  14. 14.62 + 55 =
  15. 15.36 + 9 =
  16. 16.What is the remainder when 134 is divided by 9?
  17. 17.You buy a box of crayons for ₹11 and a pen for ₹31. You pay with a ₹100 note. How much change do you get, in rupees?
  18. 18.You start your homework at 8:15 and finish at 11:35. How many minutes did you work?
  19. 19.256 ÷ 4 =
  20. 20.12 + ? = 100
  21. 21.70 − 9 =
  22. 22.56 × 6 =
  23. 23.43 × 7 =
  24. 24.Best estimate of 44 × 41? (a) 1600 (b) 160 (c) 16000
  25. 25.96 ÷ 4 =
  26. 26.608 + 99 =
  27. 27.43 laddoos are packed in boxes of 4. How many laddoos are left over?
  28. 28.64 children stand in rows of 9. How many full rows can they make?
  29. 29.Half of 70 =
  30. 30.306 − 289 =
  31. 31.A train leaves at 6:35 and reaches the next city at 8:00. How many minutes is the journey?
  32. 32.Half of 66 =
  33. 33.62 − 45 =
  34. 34.21² =
  35. 35.Best estimate of 66 × 20? (a) 1400 (b) 14000 (c) 140
  36. 36.70 + ? = 100
  37. 37.You buy a pencil box for ₹38 and a pen for ₹11. You pay with a ₹100 note. How much change do you get, in rupees?
  38. 38.6 + 7 =
  39. 39.A train leaves at 8:55 and reaches the next city at 9:45. How many minutes is the journey?
  40. 40.25% of ₹600 =

Answer key

  1. 75
  2. 76
  3. 28
  4. 6
  5. 9
  6. 82
  7. 54
  8. 60
  9. 84
  10. 65
  11. 56
  12. 600
  13. 8
  14. 117
  15. 45
  16. 8
  17. 58
  18. 200
  19. 64
  20. 88
  21. 61
  22. 336
  23. 301
  24. 1600
  25. 24
  26. 707
  27. 3
  28. 7
  29. 35
  30. 17
  31. 85
  32. 33
  33. 17
  34. 441
  35. 1400
  36. 30
  37. 51
  38. 13
  39. 50
  40. 150

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