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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 324 · 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. 1.69 − 27 =
  2. 2.78 − 27 =
  3. 3.Half of 96 =
  4. 4.60 − 22 =
  5. 5.3 + ? = 10
  6. 6.84 + 32 =
  7. 7.79 + ? = 100
  8. 8.15² =
  9. 9.94 − 34 =
  10. 10.A train leaves at 8:25 and reaches the next city at 11:25. How many minutes is the journey?
  11. 11.8 + ? = 10
  12. 12.Best estimate of 40 × 29? (a) 1200 (b) 120 (c) 12000
  13. 13.781 − 99 =
  14. 14.Double 88 =
  15. 15.88 − 68 =
  16. 16.Half of 92 =
  17. 17.You buy a storybook for ₹28 and a pen for ₹29. You pay with a ₹100 note. How much change do you get, in rupees?
  18. 18.24 laddoos are packed in boxes of 5. How many laddoos are left over?
  19. 19.25% of ₹750 =
  20. 20.23 laddoos are packed in boxes of 5. How many laddoos are left over?
  21. 21.What is the remainder when 59 is divided by 4?
  22. 22.29² =
  23. 23.98 − 88 =
  24. 24.98 − 21 =
  25. 25.32 − 9 =
  26. 26.12² =
  27. 27.41 × 9 =
  28. 28.4 + ? = 10
  29. 29.28² =
  30. 30.106 − 74 =
  31. 31.94 − 32 =
  32. 32.105 − 65 =
  33. 33.Best estimate of 860 + 285? (a) 1400 (b) 1000 (c) 1200
  34. 34.17 + 16 =
  35. 35.27 × 6 =
  36. 36.26 + 25 =
  37. 37.11 + 12 =
  38. 38.56 + 9 =
  39. 39.29 × 8 =
  40. 40.32 + 22 =

Answer key

  1. 42
  2. 51
  3. 48
  4. 38
  5. 7
  6. 116
  7. 21
  8. 225
  9. 60
  10. 180
  11. 2
  12. 1200
  13. 682
  14. 176
  15. 20
  16. 46
  17. 43
  18. 4
  19. 187.5
  20. 3
  21. 3
  22. 841
  23. 10
  24. 77
  25. 23
  26. 144
  27. 369
  28. 6
  29. 784
  30. 32
  31. 62
  32. 40
  33. 1200
  34. 33
  35. 162
  36. 51
  37. 23
  38. 65
  39. 232
  40. 54

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