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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 491 · 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. 1.19² =
  2. 2.54 + 69 =
  3. 3.50% of ₹90 =
  4. 4.49 + 28 =
  5. 5.10% of ₹750 =
  6. 6.25% of ₹670 =
  7. 7.63 + 19 =
  8. 8.56 + 21 =
  9. 9.13² =
  10. 10.You buy a notebook for ₹160 and pay with a ₹500 note. How much change do you get, in rupees?
  11. 11.7 + 9 =
  12. 12.248 ÷ 4 =
  13. 13.31 × 9 =
  14. 14.You start your homework at 2:20 and finish at 4:00. How many minutes did you work?
  15. 15.67 × 4 =
  16. 16.240 ÷ 4 =
  17. 17.21 + 45 =
  18. 18.65 children stand in rows of 7. How many full rows can they make?
  19. 19.Best estimate of 66 × 71? (a) 490 (b) 4900 (c) 49000
  20. 20.You buy a notebook for ₹51 and pay with a ₹100 note. How much change do you get, in rupees?
  21. 21.1 + ? = 10
  22. 22.A train leaves at 5:15 and reaches the next city at 6:00. How many minutes is the journey?
  23. 23.55 + 87 =
  24. 24.45 children stand in rows of 4. How many full rows can they make?
  25. 25.57 × 4 =
  26. 26.37 children stand in rows of 4. How many full rows can they make?
  27. 27.184 ÷ 8 =
  28. 28.16 + 15 =
  29. 29.16 + 19 =
  30. 30.16 × 4 =
  31. 31.Double 83 =
  32. 32.35 × 5 =
  33. 33.28² =
  34. 34.68 − 45 =
  35. 35.66 − 12 =
  36. 36.Double 28 =
  37. 37.21 + 22 =
  38. 38.368 ÷ 4 =
  39. 39.25% of ₹230 =
  40. 40.61 + ? = 100

Answer key

  1. 361
  2. 123
  3. 45
  4. 77
  5. 75
  6. 167.5
  7. 82
  8. 77
  9. 169
  10. 340
  11. 16
  12. 62
  13. 279
  14. 100
  15. 268
  16. 60
  17. 66
  18. 9
  19. 4900
  20. 49
  21. 9
  22. 45
  23. 142
  24. 11
  25. 228
  26. 9
  27. 23
  28. 31
  29. 35
  30. 64
  31. 166
  32. 175
  33. 784
  34. 23
  35. 54
  36. 56
  37. 43
  38. 92
  39. 57.5
  40. 39

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