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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 443 · 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. 1.44 × 3 =
  2. 2.6 + 5 =
  3. 3.511 − 475 =
  4. 4.61 × 9 =
  5. 5.207 − 186 =
  6. 6.Best estimate of 14 × 74? (a) 7000 (b) 700 (c) 70
  7. 7.131 laddoos are packed in boxes of 9. How many laddoos are left over?
  8. 8.25 × 5 =
  9. 9.16 + 15 =
  10. 10.A cricket match starts at 3:25 and the first innings ends at 6:30. How many minutes did the innings last?
  11. 11.21² =
  12. 12.36 + ? = 100
  13. 13.25% of ₹160 =
  14. 14.78 + ? = 100
  15. 15.27² =
  16. 16.219 − 185 =
  17. 17.60 − 35 =
  18. 18.176 ÷ 4 =
  19. 19.Best estimate of 16 × 89? (a) 1800 (b) 180 (c) 18000
  20. 20.14 + 13 =
  21. 21.516 − 496 =
  22. 22.19² =
  23. 23.10% of ₹510 =
  24. 24.35 + 7 =
  25. 25.24² =
  26. 26.50% of ₹660 =
  27. 27.29² =
  28. 28.15 + 8 =
  29. 29.A train leaves at 3:05 and reaches the next city at 4:50. How many minutes is the journey?
  30. 30.14 + 9 =
  31. 31.56 − 18 =
  32. 32.39 + 53 =
  33. 33.132 ÷ 3 =
  34. 34.Double 35 =
  35. 35.288 ÷ 8 =
  36. 36.25 + ? = 100
  37. 37.31 × 6 =
  38. 38.38 × 7 =
  39. 39.10% of ₹640 =
  40. 40.41 × 7 =

Answer key

  1. 132
  2. 11
  3. 36
  4. 549
  5. 21
  6. 700
  7. 5
  8. 125
  9. 31
  10. 185
  11. 441
  12. 64
  13. 40
  14. 22
  15. 729
  16. 34
  17. 25
  18. 44
  19. 1800
  20. 27
  21. 20
  22. 361
  23. 51
  24. 42
  25. 576
  26. 330
  27. 841
  28. 23
  29. 105
  30. 23
  31. 38
  32. 92
  33. 44
  34. 70
  35. 36
  36. 75
  37. 186
  38. 266
  39. 64
  40. 287

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