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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 130 · 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. 1.568 ÷ 8 =
  2. 2.26 + 24 =
  3. 3.62 × 4 =
  4. 4.12 + 11 =
  5. 5.28 × 8 =
  6. 6.56 + ? = 100
  7. 7.5% of ₹260 =
  8. 8.511 − 487 =
  9. 9.Double 82 =
  10. 10.184 ÷ 8 =
  11. 11.21 children stand in rows of 4. How many full rows can they make?
  12. 12.22 × 3 =
  13. 13.5% of ₹870 =
  14. 14.You start your homework at 5:25 and finish at 6:15. How many minutes did you work?
  15. 15.63 + ? = 100
  16. 16.45 + ? = 100
  17. 17.597 − 99 =
  18. 18.27 + 28 =
  19. 19.112 ÷ 4 =
  20. 20.64 − 53 =
  21. 21.31 + 31 =
  22. 22.Half of 96 =
  23. 23.24² =
  24. 24.77 − 59 =
  25. 25.49 + 9 =
  26. 26.560 − 99 =
  27. 27.59 × 6 =
  28. 28.18 + 5 =
  29. 29.38 × 5 =
  30. 30.21 × 8 =
  31. 31.65 + ? = 100
  32. 32.Best estimate of 70 × 29? (a) 21000 (b) 2100 (c) 210
  33. 33.61 + 33 =
  34. 34.217 − 189 =
  35. 35.Best estimate of 76 × 61? (a) 480 (b) 4800 (c) 48000
  36. 36.Best estimate of 79 × 61? (a) 48000 (b) 480 (c) 4800
  37. 37.49 children stand in rows of 4. How many full rows can they make?
  38. 38.79 + 9 =
  39. 39.19 laddoos are packed in boxes of 4. How many laddoos are left over?
  40. 40.1018 − 982 =

Answer key

  1. 71
  2. 50
  3. 248
  4. 23
  5. 224
  6. 44
  7. 13
  8. 24
  9. 164
  10. 23
  11. 5
  12. 66
  13. 43.5
  14. 50
  15. 37
  16. 55
  17. 498
  18. 55
  19. 28
  20. 11
  21. 62
  22. 48
  23. 576
  24. 18
  25. 58
  26. 461
  27. 354
  28. 23
  29. 190
  30. 168
  31. 35
  32. 2100
  33. 94
  34. 28
  35. 4800
  36. 4800
  37. 12
  38. 88
  39. 3
  40. 36

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