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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 514 · 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. 1.26 + 27 =
  2. 2.204 ÷ 4 =
  3. 3.25 + 9 =
  4. 4.24² =
  5. 5.84 ÷ 4 =
  6. 6.21² =
  7. 7.Best estimate of 18 × 84? (a) 16000 (b) 1600 (c) 160
  8. 8.294 ÷ 3 =
  9. 9.10% of ₹640 =
  10. 10.55 + 7 =
  11. 11.415 ÷ 5 =
  12. 12.57 − 31 =
  13. 13.217 − 197 =
  14. 14.10% of ₹500 =
  15. 15.84 ÷ 3 =
  16. 16.75 + 48 =
  17. 17.Half of 110 =
  18. 18.18 + 19 =
  19. 19.10% of ₹250 =
  20. 20.64 + ? = 100
  21. 21.A train leaves at 5:00 and reaches the next city at 8:20. How many minutes is the journey?
  22. 22.308 − 283 =
  23. 23.30 + 31 =
  24. 24.8 + ? = 10
  25. 25.25% of ₹500 =
  26. 26.96 ÷ 8 =
  27. 27.63 + 71 =
  28. 28.16 + 8 =
  29. 29.225 ÷ 5 =
  30. 30.76 + 6 =
  31. 31.5% of ₹330 =
  32. 32.25% of ₹880 =
  33. 33.206 − 189 =
  34. 34.15² =
  35. 35.Half of 152 =
  36. 36.37 + ? = 100
  37. 37.85 + 6 =
  38. 38.63 children stand in rows of 4. How many full rows can they make?
  39. 39.26 + 6 =
  40. 40.62 − 9 =

Answer key

  1. 53
  2. 51
  3. 34
  4. 576
  5. 21
  6. 441
  7. 1600
  8. 98
  9. 64
  10. 62
  11. 83
  12. 26
  13. 20
  14. 50
  15. 28
  16. 123
  17. 55
  18. 37
  19. 25
  20. 36
  21. 200
  22. 25
  23. 61
  24. 2
  25. 125
  26. 12
  27. 134
  28. 24
  29. 45
  30. 82
  31. 16.5
  32. 220
  33. 17
  34. 225
  35. 76
  36. 63
  37. 91
  38. 15
  39. 32
  40. 53

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