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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 83 · 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 cricket match starts at 7:15 and the first innings ends at 8:50. How many minutes did the innings last?
  2. 2.30 + 29 =
  3. 3.7 + 8 =
  4. 4.68 − 46 =
  5. 5.Best estimate of 26 × 88? (a) 2700 (b) 27000 (c) 270
  6. 6.33 × 4 =
  7. 7.28 + 3 =
  8. 8.You start your homework at 7:25 and finish at 9:40. How many minutes did you work?
  9. 9.504 ÷ 7 =
  10. 10.17² =
  11. 11.52 − 41 =
  12. 12.462 ÷ 6 =
  13. 13.61 − 9 =
  14. 14.132 ÷ 4 =
  15. 15.7 + ? = 10
  16. 16.Half of 48 =
  17. 17.You start your homework at 2:50 and finish at 4:55. How many minutes did you work?
  18. 18.62 − 41 =
  19. 19.Best estimate of 64 × 98? (a) 600 (b) 60000 (c) 6000
  20. 20.21 + 22 =
  21. 21.14² =
  22. 22.39 + 19 =
  23. 23.9 + ? = 10
  24. 24.You buy a notebook for ₹17 and a pen for ₹41. You pay with a ₹100 note. How much change do you get, in rupees?
  25. 25.16 + 17 =
  26. 26.225 ÷ 3 =
  27. 27.45 + ? = 100
  28. 28.69 + 8 =
  29. 29.112 ÷ 8 =
  30. 30.What is the remainder when 95 is divided by 7?
  31. 31.81 + 16 =
  32. 32.8 + 9 =
  33. 33.10% of ₹120 =
  34. 34.186 ÷ 6 =
  35. 35.97 − 85 =
  36. 36.5% of ₹510 =
  37. 37.94 − 45 =
  38. 38.62 + ? = 100
  39. 39.29 + 30 =
  40. 40.You buy a pencil box for ₹14 and a pen for ₹43. You pay with a ₹100 note. How much change do you get, in rupees?

Answer key

  1. 95
  2. 59
  3. 15
  4. 22
  5. 2700
  6. 132
  7. 31
  8. 135
  9. 72
  10. 289
  11. 11
  12. 77
  13. 52
  14. 33
  15. 3
  16. 24
  17. 125
  18. 21
  19. 6000
  20. 43
  21. 196
  22. 58
  23. 1
  24. 42
  25. 33
  26. 75
  27. 55
  28. 77
  29. 14
  30. 4
  31. 97
  32. 17
  33. 12
  34. 31
  35. 12
  36. 25.5
  37. 49
  38. 38
  39. 59
  40. 43

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