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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 478 · 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. 1.40 + ? = 100
  2. 2.What is the remainder when 53 is divided by 9?
  3. 3.55 − 29 =
  4. 4.79 − 33 =
  5. 5.14 × 4 =
  6. 6.73 + 41 =
  7. 7.17 × 8 =
  8. 8.66 + 77 =
  9. 9.50% of ₹450 =
  10. 10.25% of ₹190 =
  11. 11.41 × 8 =
  12. 12.A film starts at 3:10 and ends at 5:15. How many minutes long is the film?
  13. 13.24 × 8 =
  14. 14.49 children stand in rows of 6. How many full rows can they make?
  15. 15.Best estimate of 684 + 375? (a) 1100 (b) 900 (c) 1300
  16. 16.580 + 99 =
  17. 17.4 + ? = 10
  18. 18.116 ÷ 4 =
  19. 19.25% of ₹50 =
  20. 20.33 − 19 =
  21. 21.8 + 7 =
  22. 22.Best estimate of 13 × 61? (a) 600 (b) 6000 (c) 60
  23. 23.50 × 4 =
  24. 24.42 + 9 =
  25. 25.Half of 166 =
  26. 26.88 − 68 =
  27. 27.39 + 31 =
  28. 28.51 + 34 =
  29. 29.Best estimate of 66 × 43? (a) 28000 (b) 280 (c) 2800
  30. 30.49 + 9 =
  31. 31.323 − 282 =
  32. 32.You buy a water bottle for ₹28 and a pen for ₹44. You pay with a ₹100 note. How much change do you get, in rupees?
  33. 33.76 × 5 =
  34. 34.6 + 8 =
  35. 35.11 + 12 =
  36. 36.29 × 8 =
  37. 37.27 × 4 =
  38. 38.79 × 7 =
  39. 39.Half of 44 =
  40. 40.1017 − 980 =

Answer key

  1. 60
  2. 8
  3. 26
  4. 46
  5. 56
  6. 114
  7. 136
  8. 143
  9. 225
  10. 47.5
  11. 328
  12. 125
  13. 192
  14. 8
  15. 1100
  16. 679
  17. 6
  18. 29
  19. 12.5
  20. 14
  21. 15
  22. 600
  23. 200
  24. 51
  25. 83
  26. 20
  27. 70
  28. 85
  29. 2800
  30. 58
  31. 41
  32. 28
  33. 380
  34. 14
  35. 23
  36. 232
  37. 108
  38. 553
  39. 22
  40. 37

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