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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 923 · 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. 1.55 × 4 =
  2. 2.47 + 46 =
  3. 3.23 + 24 =
  4. 4.16 + 8 =
  5. 5.4 + ? = 10
  6. 6.330 − 286 =
  7. 7.Best estimate of 387 + 705? (a) 1300 (b) 900 (c) 1100
  8. 8.80 − 23 =
  9. 9.322 − 290 =
  10. 10.78 + 6 =
  11. 11.18 + 3 =
  12. 12.28 × 8 =
  13. 13.21 + 19 =
  14. 14.70 + ? = 100
  15. 15.54 + ? = 100
  16. 16.26 × 8 =
  17. 17.97 − 21 =
  18. 18.A train leaves at 1:00 and reaches the next city at 1:45. How many minutes is the journey?
  19. 19.27 × 3 =
  20. 20.81 − 26 =
  21. 21.7 + ? = 10
  22. 22.53 − 23 =
  23. 23.72 − 41 =
  24. 24.62 children stand in rows of 7. How many full rows can they make?
  25. 25.A train leaves at 3:50 and reaches the next city at 4:25. How many minutes is the journey?
  26. 26.9 + 5 =
  27. 27.51 × 8 =
  28. 28.25 + 24 =
  29. 29.501 − 498 =
  30. 30.33 − 9 =
  31. 31.65 + 14 =
  32. 32.58 × 7 =
  33. 33.14 laddoos are packed in boxes of 3. How many laddoos are left over?
  34. 34.59 + 29 =
  35. 35.26 children stand in rows of 3. How many full rows can they make?
  36. 36.11² =
  37. 37.26 + 29 =
  38. 38.108 ÷ 4 =
  39. 39.94 − 65 =
  40. 40.58 × 8 =

Answer key

  1. 220
  2. 93
  3. 47
  4. 24
  5. 6
  6. 44
  7. 1100
  8. 57
  9. 32
  10. 84
  11. 21
  12. 224
  13. 40
  14. 30
  15. 46
  16. 208
  17. 76
  18. 45
  19. 81
  20. 55
  21. 3
  22. 30
  23. 31
  24. 8
  25. 35
  26. 14
  27. 408
  28. 49
  29. 3
  30. 24
  31. 79
  32. 406
  33. 2
  34. 88
  35. 8
  36. 121
  37. 55
  38. 27
  39. 29
  40. 464

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