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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 185 · 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.Best estimate of 230 + 629? (a) 600 (b) 800 (c) 1000
  2. 2.837 ÷ 9 =
  3. 3.21² =
  4. 4.313 − 287 =
  5. 5.17 + 8 =
  6. 6.15² =
  7. 7.18² =
  8. 8.95 − 38 =
  9. 9.1030 − 990 =
  10. 10.Double 38 =
  11. 11.17 + 5 =
  12. 12.9 + 11 =
  13. 13.A cricket match starts at 7:30 and the first innings ends at 10:35. How many minutes did the innings last?
  14. 14.85 + 9 =
  15. 15.25 + 18 =
  16. 16.28 × 4 =
  17. 17.79 − 33 =
  18. 18.136 ÷ 8 =
  19. 19.1 + ? = 10
  20. 20.425 ÷ 5 =
  21. 21.Half of 70 =
  22. 22.59 + 84 =
  23. 23.355 ÷ 5 =
  24. 24.78 + 63 =
  25. 25.Best estimate of 783 + 295? (a) 1300 (b) 1100 (c) 900
  26. 26.224 ÷ 8 =
  27. 27.69 + 58 =
  28. 28.1007 − 987 =
  29. 29.22² =
  30. 30.A film starts at 6:50 and ends at 8:25. How many minutes long is the film?
  31. 31.You buy a box of crayons for ₹418 and pay with a ₹500 note. How much change do you get, in rupees?
  32. 32.28² =
  33. 33.408 ÷ 8 =
  34. 34.324 ÷ 4 =
  35. 35.89 children stand in rows of 9. How many full rows can they make?
  36. 36.21 + 22 =
  37. 37.68 + 81 =
  38. 38.192 ÷ 4 =
  39. 39.25 × 8 =
  40. 40.What is the remainder when 110 is divided by 7?

Answer key

  1. 800
  2. 93
  3. 441
  4. 26
  5. 25
  6. 225
  7. 324
  8. 57
  9. 40
  10. 76
  11. 22
  12. 20
  13. 185
  14. 94
  15. 43
  16. 112
  17. 46
  18. 17
  19. 9
  20. 85
  21. 35
  22. 143
  23. 71
  24. 141
  25. 1100
  26. 28
  27. 127
  28. 20
  29. 484
  30. 95
  31. 82
  32. 784
  33. 51
  34. 81
  35. 9
  36. 43
  37. 149
  38. 48
  39. 200
  40. 5

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