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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 609 · 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. 1.63 × 3 =
  2. 2.10 + 11 =
  3. 3.81 − 55 =
  4. 4.32 × 9 =
  5. 5.37 − 9 =
  6. 6.98 × 4 =
  7. 7.Best estimate of 251 + 814? (a) 1100 (b) 900 (c) 1300
  8. 8.You buy a pencil box for ₹126 and pay with a ₹500 note. How much change do you get, in rupees?
  9. 9.You start your homework at 8:40 and finish at 11:00. How many minutes did you work?
  10. 10.24 + 19 =
  11. 11.66 + 47 =
  12. 12.44 × 6 =
  13. 13.196 ÷ 4 =
  14. 14.2 + ? = 10
  15. 15.13 × 4 =
  16. 16.17 × 4 =
  17. 17.230 − 178 =
  18. 18.91 children stand in rows of 9. How many full rows can they make?
  19. 19.492 + 99 =
  20. 20.Double 34 =
  21. 21.224 ÷ 4 =
  22. 22.99 ÷ 3 =
  23. 23.102 − 83 =
  24. 24.12 + ? = 100
  25. 25.38 + 3 =
  26. 26.14 + 15 =
  27. 27.Double 77 =
  28. 28.26 + 6 =
  29. 29.58 + 22 =
  30. 30.You buy a notebook for ₹151 and pay with a ₹500 note. How much change do you get, in rupees?
  31. 31.What is the remainder when 57 is divided by 8?
  32. 32.55 − 29 =
  33. 33.3 + ? = 10
  34. 34.16 × 4 =
  35. 35.48 + 3 =
  36. 36.23² =
  37. 37.8 + ? = 10
  38. 38.216 − 189 =
  39. 39.21² =
  40. 40.93 × 8 =

Answer key

  1. 189
  2. 21
  3. 26
  4. 288
  5. 28
  6. 392
  7. 1100
  8. 374
  9. 140
  10. 43
  11. 113
  12. 264
  13. 49
  14. 8
  15. 52
  16. 68
  17. 52
  18. 10
  19. 591
  20. 68
  21. 56
  22. 33
  23. 19
  24. 88
  25. 41
  26. 29
  27. 154
  28. 32
  29. 80
  30. 349
  31. 1
  32. 26
  33. 7
  34. 64
  35. 51
  36. 529
  37. 2
  38. 27
  39. 441
  40. 744

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