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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 543 · 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. 1.58 + 41 =
  2. 2.21² =
  3. 3.Best estimate of 580 + 631? (a) 1400 (b) 1200 (c) 1000
  4. 4.16² =
  5. 5.Half of 164 =
  6. 6.You buy a kite for ₹92 and pay with a ₹100 note. How much change do you get, in rupees?
  7. 7.You buy a kite for ₹45 and a pen for ₹29. You pay with a ₹100 note. How much change do you get, in rupees?
  8. 8.46 + ? = 100
  9. 9.210 − 187 =
  10. 10.10% of ₹210 =
  11. 11.A train leaves at 3:45 and reaches the next city at 4:40. How many minutes is the journey?
  12. 12.9 + 11 =
  13. 13.94 − 31 =
  14. 14.168 ÷ 4 =
  15. 15.Half of 82 =
  16. 16.22 + 16 =
  17. 17.1019 − 979 =
  18. 18.29 × 4 =
  19. 19.6 + ? = 10
  20. 20.16 + 17 =
  21. 21.26² =
  22. 22.124 ÷ 4 =
  23. 23.29² =
  24. 24.You buy a cricket ball for ₹11 and a pen for ₹28. You pay with a ₹100 note. How much change do you get, in rupees?
  25. 25.16 + 18 =
  26. 26.21 × 7 =
  27. 27.240 ÷ 4 =
  28. 28.32 × 8 =
  29. 29.68 + 8 =
  30. 30.55 − 19 =
  31. 31.34 × 8 =
  32. 32.124 − 84 =
  33. 33.388 ÷ 4 =
  34. 34.25² =
  35. 35.432 ÷ 8 =
  36. 36.17 × 4 =
  37. 37.202 − 190 =
  38. 38.48 + 5 =
  39. 39.52 − 13 =
  40. 40.86 × 5 =

Answer key

  1. 99
  2. 441
  3. 1200
  4. 256
  5. 82
  6. 8
  7. 26
  8. 54
  9. 23
  10. 21
  11. 55
  12. 20
  13. 63
  14. 42
  15. 41
  16. 38
  17. 40
  18. 116
  19. 4
  20. 33
  21. 676
  22. 31
  23. 841
  24. 61
  25. 34
  26. 147
  27. 60
  28. 256
  29. 76
  30. 36
  31. 272
  32. 40
  33. 97
  34. 625
  35. 54
  36. 68
  37. 12
  38. 53
  39. 39
  40. 430

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