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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 750 · 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. 1.15 × 8 =
  2. 2.30 × 8 =
  3. 3.29 + ? = 100
  4. 4.88 − 68 =
  5. 5.70 − 19 =
  6. 6.69 + 8 =
  7. 7.11² =
  8. 8.66 + 8 =
  9. 9.16 + ? = 100
  10. 10.21 × 8 =
  11. 11.Half of 164 =
  12. 12.28² =
  13. 13.549 ÷ 9 =
  14. 14.83 × 9 =
  15. 15.29² =
  16. 16.144 ÷ 8 =
  17. 17.Best estimate of 27 × 93? (a) 27000 (b) 2700 (c) 270
  18. 18.What is the remainder when 29 is divided by 3?
  19. 19.25² =
  20. 20.Best estimate of 26 × 60? (a) 1800 (b) 18000 (c) 180
  21. 21.35 × 4 =
  22. 22.Best estimate of 337 + 388? (a) 500 (b) 700 (c) 900
  23. 23.What is the remainder when 47 is divided by 3?
  24. 24.204 ÷ 4 =
  25. 25.Half of 38 =
  26. 26.99 − 65 =
  27. 27.80 ÷ 5 =
  28. 28.5% of ₹60 =
  29. 29.103 − 85 =
  30. 30.8 + ? = 10
  31. 31.You buy a water bottle for ₹33 and a pen for ₹18. You pay with a ₹100 note. How much change do you get, in rupees?
  32. 32.227 − 184 =
  33. 33.26² =
  34. 34.Double 58 =
  35. 35.8 + 10 =
  36. 36.80 ÷ 4 =
  37. 37.You buy a pencil box for ₹66 and pay with a ₹100 note. How much change do you get, in rupees?
  38. 38.Half of 180 =
  39. 39.104 ÷ 8 =
  40. 40.46 + ? = 100

Answer key

  1. 120
  2. 240
  3. 71
  4. 20
  5. 51
  6. 77
  7. 121
  8. 74
  9. 84
  10. 168
  11. 82
  12. 784
  13. 61
  14. 747
  15. 841
  16. 18
  17. 2700
  18. 2
  19. 625
  20. 1800
  21. 140
  22. 700
  23. 2
  24. 51
  25. 19
  26. 34
  27. 16
  28. 3
  29. 18
  30. 2
  31. 49
  32. 43
  33. 676
  34. 116
  35. 18
  36. 20
  37. 34
  38. 90
  39. 13
  40. 54

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