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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 581 · 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. 1.78 laddoos are packed in boxes of 7. How many laddoos are left over?
  2. 2.Double 74 =
  3. 3.12 − 9 =
  4. 4.162 + 99 =
  5. 5.100 − 64 =
  6. 6.86 + 6 =
  7. 7.94 − 21 =
  8. 8.A film starts at 3:15 and ends at 5:20. How many minutes long is the film?
  9. 9.272 ÷ 8 =
  10. 10.Double 54 =
  11. 11.You buy a kite for ₹34 and pay with a ₹100 note. How much change do you get, in rupees?
  12. 12.144 ÷ 8 =
  13. 13.38 × 8 =
  14. 14.Best estimate of 73 × 76? (a) 560 (b) 56000 (c) 5600
  15. 15.88 − 28 =
  16. 16.68 + ? = 100
  17. 17.50% of ₹750 =
  18. 18.43 × 4 =
  19. 19.124 ÷ 4 =
  20. 20.76 ÷ 4 =
  21. 21.25% of ₹120 =
  22. 22.31 + 9 =
  23. 23.30 × 4 =
  24. 24.99 − 19 =
  25. 25.Double 75 =
  26. 26.128 ÷ 8 =
  27. 27.11² =
  28. 28.34 × 9 =
  29. 29.59 − 22 =
  30. 30.27 × 4 =
  31. 31.14 + ? = 100
  32. 32.7 + 6 =
  33. 33.26 − 19 =
  34. 34.4 + ? = 10
  35. 35.Best estimate of 50 × 64? (a) 3000 (b) 30000 (c) 300
  36. 36.12 + ? = 100
  37. 37.You buy a notebook for ₹29 and a pen for ₹36. You pay with a ₹100 note. How much change do you get, in rupees?
  38. 38.22² =
  39. 39.45 + 7 =
  40. 40.5% of ₹410 =

Answer key

  1. 1
  2. 148
  3. 3
  4. 261
  5. 36
  6. 92
  7. 73
  8. 125
  9. 34
  10. 108
  11. 66
  12. 18
  13. 304
  14. 5600
  15. 60
  16. 32
  17. 375
  18. 172
  19. 31
  20. 19
  21. 30
  22. 40
  23. 120
  24. 80
  25. 150
  26. 16
  27. 121
  28. 306
  29. 37
  30. 108
  31. 86
  32. 13
  33. 7
  34. 6
  35. 3000
  36. 88
  37. 35
  38. 484
  39. 52
  40. 20.5

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