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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 321 · 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. 1.25% of ₹460 =
  2. 2.1027 − 996 =
  3. 3.Best estimate of 97 × 41? (a) 40000 (b) 4000 (c) 400
  4. 4.20 + 22 =
  5. 5.168 ÷ 8 =
  6. 6.101 − 67 =
  7. 7.81 − 75 =
  8. 8.12 + 14 =
  9. 9.55 + 7 =
  10. 10.5 + ? = 10
  11. 11.95 − 21 =
  12. 12.19² =
  13. 13.You start your homework at 1:55 and finish at 4:05. How many minutes did you work?
  14. 14.15² =
  15. 15.214 − 195 =
  16. 16.What is the remainder when 22 is divided by 3?
  17. 17.272 ÷ 8 =
  18. 18.14² =
  19. 19.10 + 11 =
  20. 20.58 − 45 =
  21. 21.10% of ₹60 =
  22. 22.What is the remainder when 73 is divided by 6?
  23. 23.8 + 9 =
  24. 24.512 ÷ 8 =
  25. 25.Best estimate of 122 + 727? (a) 800 (b) 1000 (c) 600
  26. 26.4 + ? = 10
  27. 27.33 × 4 =
  28. 28.What is the remainder when 19 is divided by 3?
  29. 29.18 laddoos are packed in boxes of 4. How many laddoos are left over?
  30. 30.7 + ? = 10
  31. 31.62 + 29 =
  32. 32.74 + 29 =
  33. 33.29 + 9 =
  34. 34.328 ÷ 8 =
  35. 35.102 − 75 =
  36. 36.314 − 289 =
  37. 37.50% of ₹80 =
  38. 38.24² =
  39. 39.88 + 7 =
  40. 40.32 × 4 =

Answer key

  1. 115
  2. 31
  3. 4000
  4. 42
  5. 21
  6. 34
  7. 6
  8. 26
  9. 62
  10. 5
  11. 74
  12. 361
  13. 130
  14. 225
  15. 19
  16. 1
  17. 34
  18. 196
  19. 21
  20. 13
  21. 6
  22. 1
  23. 17
  24. 64
  25. 800
  26. 6
  27. 132
  28. 1
  29. 2
  30. 3
  31. 91
  32. 103
  33. 38
  34. 41
  35. 27
  36. 25
  37. 40
  38. 576
  39. 95
  40. 128

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