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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 168 · 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.You start your homework at 2:45 and finish at 4:10. How many minutes did you work?
  2. 2.48 + 9 =
  3. 3.What is the remainder when 69 is divided by 9?
  4. 4.83 − 9 =
  5. 5.Half of 104 =
  6. 6.313 − 285 =
  7. 7.You buy a bag of mangoes for ₹17 and a pen for ₹11. You pay with a ₹100 note. How much change do you get, in rupees?
  8. 8.You buy a storybook for ₹353 and pay with a ₹500 note. How much change do you get, in rupees?
  9. 9.50% of ₹80 =
  10. 10.36 + 79 =
  11. 11.60 + 61 =
  12. 12.192 ÷ 4 =
  13. 13.2 + ? = 10
  14. 14.75 + 8 =
  15. 15.74 − 45 =
  16. 16.48 children stand in rows of 7. How many full rows can they make?
  17. 17.70 + 9 =
  18. 18.48 + 19 =
  19. 19.65 × 6 =
  20. 20.44 + 21 =
  21. 21.75 + ? = 100
  22. 22.Half of 50 =
  23. 23.91 − 34 =
  24. 24.3 + ? = 10
  25. 25.4 + ? = 10
  26. 26.10% of ₹390 =
  27. 27.58 + 3 =
  28. 28.17 + 18 =
  29. 29.58 + 5 =
  30. 30.8 + 3 =
  31. 31.120 − 91 =
  32. 32.25² =
  33. 33.304 ÷ 8 =
  34. 34.10% of ₹500 =
  35. 35.455 ÷ 7 =
  36. 36.523 − 483 =
  37. 37.87 × 9 =
  38. 38.Best estimate of 649 + 322? (a) 900 (b) 1100 (c) 700
  39. 39.97 − 79 =
  40. 40.65 − 32 =

Answer key

  1. 85
  2. 57
  3. 6
  4. 74
  5. 52
  6. 28
  7. 72
  8. 147
  9. 40
  10. 115
  11. 121
  12. 48
  13. 8
  14. 83
  15. 29
  16. 6
  17. 79
  18. 67
  19. 390
  20. 65
  21. 25
  22. 25
  23. 57
  24. 7
  25. 6
  26. 39
  27. 61
  28. 35
  29. 63
  30. 11
  31. 29
  32. 625
  33. 38
  34. 50
  35. 65
  36. 40
  37. 783
  38. 900
  39. 18
  40. 33

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