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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 436 · 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.What is the remainder when 49 is divided by 6?
  2. 2.58 + 12 =
  3. 3.A film starts at 8:45 and ends at 9:20. How many minutes long is the film?
  4. 4.A film starts at 1:55 and ends at 5:00. How many minutes long is the film?
  5. 5.57 − 25 =
  6. 6.307 − 298 =
  7. 7.10% of ₹50 =
  8. 8.65 + 42 =
  9. 9.16 × 8 =
  10. 10.35 children stand in rows of 8. How many full rows can they make?
  11. 11.6 + 7 =
  12. 12.24 + 23 =
  13. 13.58 − 41 =
  14. 14.60 + 9 =
  15. 15.3 + ? = 10
  16. 16.23 + ? = 100
  17. 17.84 − 56 =
  18. 18.You buy a notebook for ₹359 and pay with a ₹500 note. How much change do you get, in rupees?
  19. 19.86 − 73 =
  20. 20.116 ÷ 4 =
  21. 21.28 + 4 =
  22. 22.140 ÷ 4 =
  23. 23.Half of 126 =
  24. 24.69 + 5 =
  25. 25.86 + 5 =
  26. 26.97 − 76 =
  27. 27.26 × 8 =
  28. 28.Double 16 =
  29. 29.You buy a cricket ball for ₹88 and pay with a ₹100 note. How much change do you get, in rupees?
  30. 30.Best estimate of 565 + 847? (a) 1400 (b) 1600 (c) 1200
  31. 31.98 − 29 =
  32. 32.65 − 36 =
  33. 33.30 + 31 =
  34. 34.30 × 8 =
  35. 35.15² =
  36. 36.508 − 475 =
  37. 37.Half of 134 =
  38. 38.57 + ? = 100
  39. 39.59 + 2 =
  40. 40.84 − 48 =

Answer key

  1. 1
  2. 70
  3. 35
  4. 185
  5. 32
  6. 9
  7. 5
  8. 107
  9. 128
  10. 4
  11. 13
  12. 47
  13. 17
  14. 69
  15. 7
  16. 77
  17. 28
  18. 141
  19. 13
  20. 29
  21. 32
  22. 35
  23. 63
  24. 74
  25. 91
  26. 21
  27. 208
  28. 32
  29. 12
  30. 1400
  31. 69
  32. 29
  33. 61
  34. 240
  35. 225
  36. 33
  37. 67
  38. 43
  39. 61
  40. 36

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