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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 564 · 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 buy a notebook for ₹303 and pay with a ₹500 note. How much change do you get, in rupees?
  2. 2.74 − 9 =
  3. 3.41 + 78 =
  4. 4.58 − 44 =
  5. 5.106 − 78 =
  6. 6.62 children stand in rows of 8. How many full rows can they make?
  7. 7.224 ÷ 8 =
  8. 8.85 + ? = 100
  9. 9.14 + 16 =
  10. 10.Double 51 =
  11. 11.119 ÷ 7 =
  12. 12.24 + 25 =
  13. 13.74 + 86 =
  14. 14.2 + ? = 10
  15. 15.89 − 75 =
  16. 16.45 + 13 =
  17. 17.462 ÷ 7 =
  18. 18.228 ÷ 3 =
  19. 19.73 + 71 =
  20. 20.26² =
  21. 21.18 + 19 =
  22. 22.88 + 9 =
  23. 23.85 − 74 =
  24. 24.24 × 8 =
  25. 25.Best estimate of 30 × 36? (a) 12000 (b) 1200 (c) 120
  26. 26.15 + 6 =
  27. 27.You buy a notebook for ₹15 and a pen for ₹14. You pay with a ₹100 note. How much change do you get, in rupees?
  28. 28.100 − 73 =
  29. 29.232 ÷ 8 =
  30. 30.82 + ? = 100
  31. 31.176 ÷ 4 =
  32. 32.1005 − 984 =
  33. 33.43 + ? = 100
  34. 34.Best estimate of 751 + 290? (a) 900 (b) 1300 (c) 1100
  35. 35.87 × 8 =
  36. 36.Double 21 =
  37. 37.You buy a notebook for ₹31 and a pen for ₹37. You pay with a ₹100 note. How much change do you get, in rupees?
  38. 38.6 + 5 =
  39. 39.10 + 11 =
  40. 40.61 − 14 =

Answer key

  1. 197
  2. 65
  3. 119
  4. 14
  5. 28
  6. 7
  7. 28
  8. 15
  9. 30
  10. 102
  11. 17
  12. 49
  13. 160
  14. 8
  15. 14
  16. 58
  17. 66
  18. 76
  19. 144
  20. 676
  21. 37
  22. 97
  23. 11
  24. 192
  25. 1200
  26. 21
  27. 71
  28. 27
  29. 29
  30. 18
  31. 44
  32. 21
  33. 57
  34. 1100
  35. 696
  36. 42
  37. 32
  38. 11
  39. 21
  40. 47

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