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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 918 · 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. 1.92 × 4 =
  2. 2.62 × 4 =
  3. 3.17² =
  4. 4.69 − 54 =
  5. 5.27 × 8 =
  6. 6.15 × 8 =
  7. 7.20 × 4 =
  8. 8.525 − 475 =
  9. 9.10% of ₹520 =
  10. 10.16 × 8 =
  11. 11.79 − 65 =
  12. 12.522 − 495 =
  13. 13.73 + 77 =
  14. 14.38 laddoos are packed in boxes of 4. How many laddoos are left over?
  15. 15.26 + 68 =
  16. 16.58 − 44 =
  17. 17.65 + ? = 100
  18. 18.10% of ₹680 =
  19. 19.12 + 9 =
  20. 20.1024 − 998 =
  21. 21.192 ÷ 4 =
  22. 22.25 + 27 =
  23. 23.204 ÷ 4 =
  24. 24.3 + ? = 10
  25. 25.You buy a box of crayons for ₹77 and pay with a ₹100 note. How much change do you get, in rupees?
  26. 26.28² =
  27. 27.22 + 24 =
  28. 28.41 laddoos are packed in boxes of 3. How many laddoos are left over?
  29. 29.18 × 4 =
  30. 30.23 − 9 =
  31. 31.45 + 8 =
  32. 32.48 − 29 =
  33. 33.9 + ? = 10
  34. 34.47 × 4 =
  35. 35.83 − 24 =
  36. 36.23 + 22 =
  37. 37.You buy a notebook for ₹16 and a pen for ₹18. You pay with a ₹100 note. How much change do you get, in rupees?
  38. 38.24 × 8 =
  39. 39.84 − 9 =
  40. 40.Half of 168 =

Answer key

  1. 368
  2. 248
  3. 289
  4. 15
  5. 216
  6. 120
  7. 80
  8. 50
  9. 52
  10. 128
  11. 14
  12. 27
  13. 150
  14. 2
  15. 94
  16. 14
  17. 35
  18. 68
  19. 21
  20. 26
  21. 48
  22. 52
  23. 51
  24. 7
  25. 23
  26. 784
  27. 46
  28. 2
  29. 72
  30. 14
  31. 53
  32. 19
  33. 1
  34. 188
  35. 59
  36. 45
  37. 66
  38. 192
  39. 75
  40. 84

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