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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 615 · 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. 1.54 − 16 =
  2. 2.A train leaves at 3:25 and reaches the next city at 5:05. How many minutes is the journey?
  3. 3.Best estimate of 225 + 619? (a) 800 (b) 600 (c) 1000
  4. 4.5% of ₹330 =
  5. 5.You buy a notebook for ₹92 and pay with a ₹100 note. How much change do you get, in rupees?
  6. 6.18 + 17 =
  7. 7.56 + ? = 100
  8. 8.17² =
  9. 9.14² =
  10. 10.42 ÷ 3 =
  11. 11.320 ÷ 8 =
  12. 12.59 − 37 =
  13. 13.17 + 19 =
  14. 14.A film starts at 4:50 and ends at 5:35. How many minutes long is the film?
  15. 15.50% of ₹640 =
  16. 16.What is the remainder when 26 is divided by 4?
  17. 17.Half of 64 =
  18. 18.42 × 9 =
  19. 19.765 ÷ 9 =
  20. 20.39 × 8 =
  21. 21.65 ÷ 5 =
  22. 22.72 − 16 =
  23. 23.224 ÷ 8 =
  24. 24.228 − 186 =
  25. 25.15² =
  26. 26.5% of ₹610 =
  27. 27.711 ÷ 9 =
  28. 28.30 + 31 =
  29. 29.369 ÷ 9 =
  30. 30.38 + 19 =
  31. 31.39 + 6 =
  32. 32.Best estimate of 555 + 600? (a) 1400 (b) 1200 (c) 1000
  33. 33.236 ÷ 4 =
  34. 34.48 + 3 =
  35. 35.Best estimate of 39 × 52? (a) 20000 (b) 200 (c) 2000
  36. 36.10% of ₹310 =
  37. 37.416 ÷ 8 =
  38. 38.216 ÷ 4 =
  39. 39.7 + 4 =
  40. 40.370 ÷ 5 =

Answer key

  1. 38
  2. 100
  3. 800
  4. 16.5
  5. 8
  6. 35
  7. 44
  8. 289
  9. 196
  10. 14
  11. 40
  12. 22
  13. 36
  14. 45
  15. 320
  16. 2
  17. 32
  18. 378
  19. 85
  20. 312
  21. 13
  22. 56
  23. 28
  24. 42
  25. 225
  26. 30.5
  27. 79
  28. 61
  29. 41
  30. 57
  31. 45
  32. 1200
  33. 59
  34. 51
  35. 2000
  36. 31
  37. 52
  38. 54
  39. 11
  40. 74

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