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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 382 · 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. 1.76 laddoos are packed in boxes of 8. How many laddoos are left over?
  2. 2.256 ÷ 8 =
  3. 3.Best estimate of 88 × 91? (a) 8100 (b) 81000 (c) 810
  4. 4.41 + 9 =
  5. 5.6 + 7 =
  6. 6.A film starts at 3:25 and ends at 5:10. How many minutes long is the film?
  7. 7.21 + 22 =
  8. 8.72 ÷ 4 =
  9. 9.A film starts at 7:50 and ends at 9:10. How many minutes long is the film?
  10. 10.118 − 84 =
  11. 11.12 + 14 =
  12. 12.Best estimate of 703 + 121? (a) 600 (b) 800 (c) 1000
  13. 13.37 + ? = 100
  14. 14.9 + 4 =
  15. 15.37 × 8 =
  16. 16.8 + 4 =
  17. 17.1010 − 991 =
  18. 18.56 + 31 =
  19. 19.14 + ? = 100
  20. 20.184 ÷ 8 =
  21. 21.7 + 9 =
  22. 22.A film starts at 4:20 and ends at 7:10. How many minutes long is the film?
  23. 23.68 + 4 =
  24. 24.42 + 25 =
  25. 25.29 × 4 =
  26. 26.Double 67 =
  27. 27.11 + 13 =
  28. 28.90 − 21 =
  29. 29.12 + 13 =
  30. 30.You buy a bag of mangoes for ₹447 and pay with a ₹500 note. How much change do you get, in rupees?
  31. 31.2 + ? = 10
  32. 32.46 + 5 =
  33. 33.Double 99 =
  34. 34.176 ÷ 4 =
  35. 35.7 + ? = 10
  36. 36.24 + 18 =
  37. 37.21 × 4 =
  38. 38.14 + 13 =
  39. 39.59 + ? = 100
  40. 40.75 − 29 =

Answer key

  1. 4
  2. 32
  3. 8100
  4. 50
  5. 13
  6. 105
  7. 43
  8. 18
  9. 80
  10. 34
  11. 26
  12. 800
  13. 63
  14. 13
  15. 296
  16. 12
  17. 19
  18. 87
  19. 86
  20. 23
  21. 16
  22. 170
  23. 72
  24. 67
  25. 116
  26. 134
  27. 24
  28. 69
  29. 25
  30. 53
  31. 8
  32. 51
  33. 198
  34. 44
  35. 3
  36. 42
  37. 84
  38. 27
  39. 41
  40. 46

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