← Mixed mental challenge lesson New set →

Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 719 · 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. 1.23² =
  2. 2.76 ÷ 4 =
  3. 3.16² =
  4. 4.27 + 6 =
  5. 5.Best estimate of 12 × 27? (a) 3000 (b) 30 (c) 300
  6. 6.79 + 17 =
  7. 7.A train leaves at 1:45 and reaches the next city at 5:00. How many minutes is the journey?
  8. 8.35 + ? = 100
  9. 9.6 + 5 =
  10. 10.55 + 87 =
  11. 11.14 + 13 =
  12. 12.Half of 38 =
  13. 13.61 × 5 =
  14. 14.91 − 58 =
  15. 15.You start your homework at 4:45 and finish at 7:15. How many minutes did you work?
  16. 16.30 + 9 =
  17. 17.59 + 5 =
  18. 18.You buy a cricket ball for ₹363 and pay with a ₹500 note. How much change do you get, in rupees?
  19. 19.Best estimate of 37 × 31? (a) 120 (b) 12000 (c) 1200
  20. 20.5% of ₹500 =
  21. 21.40 + 9 =
  22. 22.50% of ₹110 =
  23. 23.86 + 87 =
  24. 24.23 + 22 =
  25. 25.25% of ₹70 =
  26. 26.118 − 76 =
  27. 27.What is the remainder when 49 is divided by 8?
  28. 28.21 × 9 =
  29. 29.29 + 28 =
  30. 30.32 × 5 =
  31. 31.55 + ? = 100
  32. 32.50% of ₹830 =
  33. 33.10% of ₹190 =
  34. 34.Best estimate of 728 + 528? (a) 1400 (b) 1200 (c) 1000
  35. 35.208 ÷ 4 =
  36. 36.10% of ₹610 =
  37. 37.16 laddoos are packed in boxes of 3. How many laddoos are left over?
  38. 38.32 × 8 =
  39. 39.Best estimate of 77 × 68? (a) 56000 (b) 5600 (c) 560
  40. 40.565 − 99 =

Answer key

  1. 529
  2. 19
  3. 256
  4. 33
  5. 300
  6. 96
  7. 195
  8. 65
  9. 11
  10. 142
  11. 27
  12. 19
  13. 305
  14. 33
  15. 150
  16. 39
  17. 64
  18. 137
  19. 1200
  20. 25
  21. 49
  22. 55
  23. 173
  24. 45
  25. 17.5
  26. 42
  27. 1
  28. 189
  29. 57
  30. 160
  31. 45
  32. 415
  33. 19
  34. 1200
  35. 52
  36. 61
  37. 1
  38. 256
  39. 5600
  40. 466

Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths