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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 181 · 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. 1.21 + 34 =
  2. 2.You buy a bag of mangoes for ₹46 and pay with a ₹100 note. How much change do you get, in rupees?
  3. 3.6 + 5 =
  4. 4.You start your homework at 6:05 and finish at 7:15. How many minutes did you work?
  5. 5.85 children stand in rows of 7. How many full rows can they make?
  6. 6.Best estimate of 317 + 822? (a) 1100 (b) 1300 (c) 900
  7. 7.129 − 85 =
  8. 8.22 × 4 =
  9. 9.A cricket match starts at 3:30 and the first innings ends at 5:35. How many minutes did the innings last?
  10. 10.56 + ? = 100
  11. 11.2 + ? = 10
  12. 12.23 + 24 =
  13. 13.You start your homework at 3:25 and finish at 5:10. How many minutes did you work?
  14. 14.You buy a cricket ball for ₹156 and pay with a ₹500 note. How much change do you get, in rupees?
  15. 15.70 − 43 =
  16. 16.71 + 87 =
  17. 17.8 + 9 =
  18. 18.784 ÷ 8 =
  19. 19.68 × 8 =
  20. 20.132 ÷ 4 =
  21. 21.23 + 89 =
  22. 22.13 + 12 =
  23. 23.You buy a pencil box for ₹27 and a pen for ₹38. You pay with a ₹100 note. How much change do you get, in rupees?
  24. 24.55 + 9 =
  25. 25.27 + 8 =
  26. 26.38 children stand in rows of 8. How many full rows can they make?
  27. 27.You buy a kite for ₹459 and pay with a ₹500 note. How much change do you get, in rupees?
  28. 28.455 ÷ 7 =
  29. 29.Half of 194 =
  30. 30.You buy a storybook for ₹27 and a pen for ₹39. You pay with a ₹100 note. How much change do you get, in rupees?
  31. 31.32 + ? = 100
  32. 32.49 × 7 =
  33. 33.648 ÷ 9 =
  34. 34.62 + ? = 100
  35. 35.32 laddoos are packed in boxes of 3. How many laddoos are left over?
  36. 36.28² =
  37. 37.A film starts at 1:25 and ends at 3:55. How many minutes long is the film?
  38. 38.5% of ₹620 =
  39. 39.A cricket match starts at 1:30 and the first innings ends at 2:30. How many minutes did the innings last?
  40. 40.18 × 8 =

Answer key

  1. 55
  2. 54
  3. 11
  4. 70
  5. 12
  6. 1100
  7. 44
  8. 88
  9. 125
  10. 44
  11. 8
  12. 47
  13. 105
  14. 344
  15. 27
  16. 158
  17. 17
  18. 98
  19. 544
  20. 33
  21. 112
  22. 25
  23. 35
  24. 64
  25. 35
  26. 4
  27. 41
  28. 65
  29. 97
  30. 34
  31. 68
  32. 343
  33. 72
  34. 38
  35. 2
  36. 784
  37. 150
  38. 31
  39. 60
  40. 144

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