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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 843 · 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. 1.65 + 7 =
  2. 2.44 − 29 =
  3. 3.77 + 6 =
  4. 4.Half of 84 =
  5. 5.37 × 8 =
  6. 6.6 + ? = 10
  7. 7.Best estimate of 84 × 90? (a) 720 (b) 7200 (c) 72000
  8. 8.You buy a storybook for ₹377 and pay with a ₹500 note. How much change do you get, in rupees?
  9. 9.214 − 194 =
  10. 10.60 − 19 =
  11. 11.95 − 65 =
  12. 12.21 + 23 =
  13. 13.1003 − 978 =
  14. 14.12² =
  15. 15.Double 81 =
  16. 16.28² =
  17. 17.120 ÷ 4 =
  18. 18.37 × 4 =
  19. 19.88 × 4 =
  20. 20.Half of 188 =
  21. 21.49 + 6 =
  22. 22.5% of ₹410 =
  23. 23.10% of ₹240 =
  24. 24.16 + 17 =
  25. 25.A film starts at 4:25 and ends at 4:55. How many minutes long is the film?
  26. 26.49 laddoos are packed in boxes of 6. How many laddoos are left over?
  27. 27.3 + ? = 10
  28. 28.20 + 19 =
  29. 29.15 + 6 =
  30. 30.14² =
  31. 31.71 × 7 =
  32. 32.Half of 168 =
  33. 33.Double 51 =
  34. 34.35 + 19 =
  35. 35.A film starts at 4:25 and ends at 7:10. How many minutes long is the film?
  36. 36.418 − 99 =
  37. 37.25% of ₹410 =
  38. 38.87 + 6 =
  39. 39.77 − 57 =
  40. 40.38 + ? = 100

Answer key

  1. 72
  2. 15
  3. 83
  4. 42
  5. 296
  6. 4
  7. 7200
  8. 123
  9. 20
  10. 41
  11. 30
  12. 44
  13. 25
  14. 144
  15. 162
  16. 784
  17. 30
  18. 148
  19. 352
  20. 94
  21. 55
  22. 20.5
  23. 24
  24. 33
  25. 30
  26. 1
  27. 7
  28. 39
  29. 21
  30. 196
  31. 497
  32. 84
  33. 102
  34. 54
  35. 165
  36. 319
  37. 102.5
  38. 93
  39. 20
  40. 62

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