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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 684 · 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.You start your homework at 2:10 and finish at 3:20. How many minutes did you work?
  2. 2.26 + 9 =
  3. 3.84 − 69 =
  4. 4.You start your homework at 8:20 and finish at 11:30. How many minutes did you work?
  5. 5.25% of ₹640 =
  6. 6.24 × 8 =
  7. 7.60 ÷ 4 =
  8. 8.57 + 5 =
  9. 9.97 − 68 =
  10. 10.9 + 11 =
  11. 11.19 × 8 =
  12. 12.208 ÷ 8 =
  13. 13.57 − 16 =
  14. 14.39 + ? = 100
  15. 15.558 ÷ 6 =
  16. 16.33 children stand in rows of 8. How many full rows can they make?
  17. 17.1010 − 991 =
  18. 18.1016 − 990 =
  19. 19.Double 79 =
  20. 20.17 + 16 =
  21. 21.10% of ₹500 =
  22. 22.You buy a notebook for ₹15 and a pen for ₹35. You pay with a ₹100 note. How much change do you get, in rupees?
  23. 23.7 + ? = 10
  24. 24.14 × 4 =
  25. 25.57 + 55 =
  26. 26.57 + 53 =
  27. 27.61 × 9 =
  28. 28.50% of ₹90 =
  29. 29.19 + 7 =
  30. 30.32 − 19 =
  31. 31.16² =
  32. 32.You buy a pencil box for ₹56 and pay with a ₹100 note. How much change do you get, in rupees?
  33. 33.79 + 61 =
  34. 34.A cricket match starts at 3:00 and the first innings ends at 3:25. How many minutes did the innings last?
  35. 35.7 + 4 =
  36. 36.273 ÷ 7 =
  37. 37.Half of 62 =
  38. 38.2 + ? = 10
  39. 39.59 + 6 =
  40. 40.24 + 79 =

Answer key

  1. 70
  2. 35
  3. 15
  4. 190
  5. 160
  6. 192
  7. 15
  8. 62
  9. 29
  10. 20
  11. 152
  12. 26
  13. 41
  14. 61
  15. 93
  16. 4
  17. 19
  18. 26
  19. 158
  20. 33
  21. 50
  22. 50
  23. 3
  24. 56
  25. 112
  26. 110
  27. 549
  28. 45
  29. 26
  30. 13
  31. 256
  32. 44
  33. 140
  34. 25
  35. 11
  36. 39
  37. 31
  38. 8
  39. 65
  40. 103

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