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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 786 · 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. 1.248 ÷ 8 =
  2. 2.22 + 68 =
  3. 3.Best estimate of 733 + 637? (a) 1300 (b) 1100 (c) 1500
  4. 4.37 laddoos are packed in boxes of 9. How many laddoos are left over?
  5. 5.59 − 29 =
  6. 6.52 + ? = 100
  7. 7.Best estimate of 253 + 187? (a) 700 (b) 500 (c) 300
  8. 8.86 − 73 =
  9. 9.108 − 84 =
  10. 10.11 + 12 =
  11. 11.280 ÷ 8 =
  12. 12.Half of 30 =
  13. 13.30 + 32 =
  14. 14.92 ÷ 4 =
  15. 15.12 × 4 =
  16. 16.52 − 45 =
  17. 17.21 + 89 =
  18. 18.29 + 6 =
  19. 19.5% of ₹710 =
  20. 20.77 + 6 =
  21. 21.61 + ? = 100
  22. 22.8 + 9 =
  23. 23.5% of ₹890 =
  24. 24.56 × 4 =
  25. 25.72 + 24 =
  26. 26.270 − 99 =
  27. 27.272 ÷ 8 =
  28. 28.88 ÷ 4 =
  29. 29.450 ÷ 6 =
  30. 30.27 + 26 =
  31. 31.13² =
  32. 32.Best estimate of 680 + 123? (a) 1000 (b) 600 (c) 800
  33. 33.855 − 99 =
  34. 34.70 − 43 =
  35. 35.What is the remainder when 50 is divided by 4?
  36. 36.16 + 17 =
  37. 37.A film starts at 1:10 and ends at 3:05. How many minutes long is the film?
  38. 38.Best estimate of 41 × 90? (a) 3600 (b) 36000 (c) 360
  39. 39.6 + 5 =
  40. 40.You buy a kite for ₹358 and pay with a ₹500 note. How much change do you get, in rupees?

Answer key

  1. 31
  2. 90
  3. 1300
  4. 1
  5. 30
  6. 48
  7. 500
  8. 13
  9. 24
  10. 23
  11. 35
  12. 15
  13. 62
  14. 23
  15. 48
  16. 7
  17. 110
  18. 35
  19. 35.5
  20. 83
  21. 39
  22. 17
  23. 44.5
  24. 224
  25. 96
  26. 171
  27. 34
  28. 22
  29. 75
  30. 53
  31. 169
  32. 800
  33. 756
  34. 27
  35. 2
  36. 33
  37. 115
  38. 3600
  39. 11
  40. 142

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