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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 890 · 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. 1.46 + 87 =
  2. 2.26 × 8 =
  3. 3.504 ÷ 8 =
  4. 4.Best estimate of 34 × 61? (a) 18000 (b) 1800 (c) 180
  5. 5.What is the remainder when 110 is divided by 9?
  6. 6.15 × 7 =
  7. 7.220 − 177 =
  8. 8.22 + 21 =
  9. 9.A train leaves at 3:40 and reaches the next city at 4:50. How many minutes is the journey?
  10. 10.Best estimate of 36 × 28? (a) 12000 (b) 120 (c) 1200
  11. 11.77 − 28 =
  12. 12.3 + ? = 10
  13. 13.29 × 8 =
  14. 14.144 ÷ 6 =
  15. 15.58 + 3 =
  16. 16.82 + 44 =
  17. 17.1 + ? = 10
  18. 18.121 − 98 =
  19. 19.78 + 9 =
  20. 20.89 × 3 =
  21. 21.50% of ₹40 =
  22. 22.What is the remainder when 43 is divided by 4?
  23. 23.152 ÷ 8 =
  24. 24.23² =
  25. 25.120 ÷ 8 =
  26. 26.What is the remainder when 66 is divided by 7?
  27. 27.128 ÷ 8 =
  28. 28.26 + 25 =
  29. 29.76 + ? = 100
  30. 30.4 + ? = 10
  31. 31.21 × 8 =
  32. 32.5% of ₹160 =
  33. 33.5% of ₹660 =
  34. 34.Best estimate of 50 × 59? (a) 3000 (b) 30000 (c) 300
  35. 35.60 − 18 =
  36. 36.5% of ₹300 =
  37. 37.83 − 15 =
  38. 38.208 − 194 =
  39. 39.224 ÷ 4 =
  40. 40.13 × 4 =

Answer key

  1. 133
  2. 208
  3. 63
  4. 1800
  5. 2
  6. 105
  7. 43
  8. 43
  9. 70
  10. 1200
  11. 49
  12. 7
  13. 232
  14. 24
  15. 61
  16. 126
  17. 9
  18. 23
  19. 87
  20. 267
  21. 20
  22. 3
  23. 19
  24. 529
  25. 15
  26. 3
  27. 16
  28. 51
  29. 24
  30. 6
  31. 168
  32. 8
  33. 33
  34. 3000
  35. 42
  36. 15
  37. 68
  38. 14
  39. 56
  40. 52

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