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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 926 · 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 + 17 =
  2. 2.22 + ? = 100
  3. 3.15 + 14 =
  4. 4.You buy a cricket ball for ₹131 and pay with a ₹500 note. How much change do you get, in rupees?
  5. 5.24² =
  6. 6.192 ÷ 3 =
  7. 7.27 + 28 =
  8. 8.You start your homework at 2:30 and finish at 3:40. How many minutes did you work?
  9. 9.288 ÷ 8 =
  10. 10.44 − 29 =
  11. 11.3 + ? = 10
  12. 12.120 ÷ 4 =
  13. 13.74 + 9 =
  14. 14.6 + 7 =
  15. 15.58 − 39 =
  16. 16.50% of ₹150 =
  17. 17.Best estimate of 88 × 86? (a) 8100 (b) 810 (c) 81000
  18. 18.72 ÷ 4 =
  19. 19.515 − 483 =
  20. 20.Half of 186 =
  21. 21.27 × 4 =
  22. 22.47 × 6 =
  23. 23.80 + 29 =
  24. 24.443 − 99 =
  25. 25.56 + 24 =
  26. 26.40 + 49 =
  27. 27.27 + 9 =
  28. 28.50% of ₹390 =
  29. 29.25² =
  30. 30.88 − 62 =
  31. 31.46 × 4 =
  32. 32.86 − 58 =
  33. 33.1004 − 984 =
  34. 34.13 × 4 =
  35. 35.50% of ₹100 =
  36. 36.86 + 16 =
  37. 37.12² =
  38. 38.525 − 479 =
  39. 39.Best estimate of 356 + 175? (a) 600 (b) 800 (c) 400
  40. 40.25 + 7 =

Answer key

  1. 71
  2. 78
  3. 29
  4. 369
  5. 576
  6. 64
  7. 55
  8. 70
  9. 36
  10. 15
  11. 7
  12. 30
  13. 83
  14. 13
  15. 19
  16. 75
  17. 8100
  18. 18
  19. 32
  20. 93
  21. 108
  22. 282
  23. 109
  24. 344
  25. 80
  26. 89
  27. 36
  28. 195
  29. 625
  30. 26
  31. 184
  32. 28
  33. 20
  34. 52
  35. 50
  36. 102
  37. 144
  38. 46
  39. 600
  40. 32

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