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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 575 · 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. 1.204 − 181 =
  2. 2.26 × 8 =
  3. 3.1008 − 978 =
  4. 4.56 + 29 =
  5. 5.17 + 6 =
  6. 6.Double 38 =
  7. 7.2 + ? = 10
  8. 8.120 ÷ 8 =
  9. 9.Half of 144 =
  10. 10.53 − 41 =
  11. 11.50% of ₹790 =
  12. 12.56 − 29 =
  13. 13.21² =
  14. 14.213 − 181 =
  15. 15.72 ÷ 4 =
  16. 16.96 − 41 =
  17. 17.Half of 38 =
  18. 18.25% of ₹850 =
  19. 19.You buy a storybook for ₹108 and pay with a ₹500 note. How much change do you get, in rupees?
  20. 20.81 − 31 =
  21. 21.79 − 63 =
  22. 22.71 × 4 =
  23. 23.A cricket match starts at 6:30 and the first innings ends at 7:40. How many minutes did the innings last?
  24. 24.5 + ? = 10
  25. 25.76 + ? = 100
  26. 26.22 + ? = 100
  27. 27.25% of ₹260 =
  28. 28.30 + 31 =
  29. 29.Half of 42 =
  30. 30.1 + ? = 10
  31. 31.20 + 21 =
  32. 32.60 − 41 =
  33. 33.164 ÷ 4 =
  34. 34.1002 − 983 =
  35. 35.18 × 8 =
  36. 36.4 + ? = 10
  37. 37.45 + 6 =
  38. 38.12 × 8 =
  39. 39.8 + 9 =
  40. 40.Best estimate of 300 + 561? (a) 1100 (b) 700 (c) 900

Answer key

  1. 23
  2. 208
  3. 30
  4. 85
  5. 23
  6. 76
  7. 8
  8. 15
  9. 72
  10. 12
  11. 395
  12. 27
  13. 441
  14. 32
  15. 18
  16. 55
  17. 19
  18. 212.5
  19. 392
  20. 50
  21. 16
  22. 284
  23. 70
  24. 5
  25. 24
  26. 78
  27. 65
  28. 61
  29. 21
  30. 9
  31. 41
  32. 19
  33. 41
  34. 19
  35. 144
  36. 6
  37. 51
  38. 96
  39. 17
  40. 900

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