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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 423 · 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. 1.95 × 9 =
  2. 2.13² =
  3. 3.54 − 38 =
  4. 4.65 − 48 =
  5. 5.83 children stand in rows of 6. How many full rows can they make?
  6. 6.34 + 14 =
  7. 7.37 × 8 =
  8. 8.27 + 28 =
  9. 9.Half of 118 =
  10. 10.56 − 18 =
  11. 11.60 ÷ 4 =
  12. 12.76 − 29 =
  13. 13.818 − 99 =
  14. 14.132 children stand in rows of 9. How many full rows can they make?
  15. 15.59 × 3 =
  16. 16.15² =
  17. 17.96 × 6 =
  18. 18.27 + 29 =
  19. 19.29 children stand in rows of 4. How many full rows can they make?
  20. 20.78 × 3 =
  21. 21.Half of 34 =
  22. 22.140 ÷ 4 =
  23. 23.96 − 73 =
  24. 24.18 × 3 =
  25. 25.7 + 6 =
  26. 26.47 + 9 =
  27. 27.98 × 4 =
  28. 28.85 − 77 =
  29. 29.192 ÷ 4 =
  30. 30.Best estimate of 653 + 813? (a) 1500 (b) 1300 (c) 1700
  31. 31.106 − 29 =
  32. 32.33 + 79 =
  33. 33.31 + 69 =
  34. 34.86 + 56 =
  35. 35.You buy a kite for ₹344 and pay with a ₹500 note. How much change do you get, in rupees?
  36. 36.Best estimate of 31 × 51? (a) 15000 (b) 1500 (c) 150
  37. 37.135 ÷ 3 =
  38. 38.88 + 4 =
  39. 39.56 × 5 =
  40. 40.232 ÷ 8 =

Answer key

  1. 855
  2. 169
  3. 16
  4. 17
  5. 13
  6. 48
  7. 296
  8. 55
  9. 59
  10. 38
  11. 15
  12. 47
  13. 719
  14. 14
  15. 177
  16. 225
  17. 576
  18. 56
  19. 7
  20. 234
  21. 17
  22. 35
  23. 23
  24. 54
  25. 13
  26. 56
  27. 392
  28. 8
  29. 48
  30. 1500
  31. 77
  32. 112
  33. 100
  34. 142
  35. 156
  36. 1500
  37. 45
  38. 92
  39. 280
  40. 29

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