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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 241 · 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. 1.17² =
  2. 2.5% of ₹710 =
  3. 3.1001 − 992 =
  4. 4.205 − 193 =
  5. 5.70 × 4 =
  6. 6.21² =
  7. 7.12² =
  8. 8.432 ÷ 8 =
  9. 9.272 ÷ 8 =
  10. 10.50% of ₹130 =
  11. 11.10% of ₹710 =
  12. 12.25% of ₹850 =
  13. 13.61 × 9 =
  14. 14.69 + 42 =
  15. 15.29 + 31 =
  16. 16.5% of ₹800 =
  17. 17.62 − 14 =
  18. 18.15 + 16 =
  19. 19.23² =
  20. 20.You start your homework at 7:30 and finish at 9:50. How many minutes did you work?
  21. 21.89 + 28 =
  22. 22.70 ÷ 5 =
  23. 23.Double 71 =
  24. 24.25 + 26 =
  25. 25.17 × 4 =
  26. 26.You buy a kite for ₹70 and pay with a ₹100 note. How much change do you get, in rupees?
  27. 27.508 − 495 =
  28. 28.50% of ₹540 =
  29. 29.10% of ₹650 =
  30. 30.What is the remainder when 81 is divided by 7?
  31. 31.13² =
  32. 32.24² =
  33. 33.Half of 90 =
  34. 34.67 + ? = 100
  35. 35.100 ÷ 4 =
  36. 36.26² =
  37. 37.25% of ₹460 =
  38. 38.Best estimate of 596 + 648? (a) 1200 (b) 1400 (c) 1000
  39. 39.224 ÷ 4 =
  40. 40.7 + ? = 10

Answer key

  1. 289
  2. 35.5
  3. 9
  4. 12
  5. 280
  6. 441
  7. 144
  8. 54
  9. 34
  10. 65
  11. 71
  12. 212.5
  13. 549
  14. 111
  15. 60
  16. 40
  17. 48
  18. 31
  19. 529
  20. 140
  21. 117
  22. 14
  23. 142
  24. 51
  25. 68
  26. 30
  27. 13
  28. 270
  29. 65
  30. 4
  31. 169
  32. 576
  33. 45
  34. 33
  35. 25
  36. 676
  37. 115
  38. 1200
  39. 56
  40. 3

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