← Mixed mental challenge lesson New set →

Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 45 · 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. 1.25 + 6 =
  2. 2.43 + 41 =
  3. 3.79 + 57 =
  4. 4.Half of 168 =
  5. 5.22² =
  6. 6.325 ÷ 5 =
  7. 7.24² =
  8. 8.50% of ₹790 =
  9. 9.15 + 6 =
  10. 10.21 + ? = 100
  11. 11.41 × 4 =
  12. 12.25 + 26 =
  13. 13.20 × 4 =
  14. 14.39 × 4 =
  15. 15.You buy a kite for ₹16 and a pen for ₹27. You pay with a ₹100 note. How much change do you get, in rupees?
  16. 16.416 ÷ 8 =
  17. 17.62 + ? = 100
  18. 18.39 + 89 =
  19. 19.82 × 4 =
  20. 20.220 ÷ 4 =
  21. 21.23² =
  22. 22.33 × 8 =
  23. 23.49 + ? = 100
  24. 24.505 − 482 =
  25. 25.31 × 3 =
  26. 26.160 ÷ 8 =
  27. 27.Best estimate of 69 × 96? (a) 7000 (b) 70000 (c) 700
  28. 28.8 + ? = 10
  29. 29.15 + 14 =
  30. 30.61 + 23 =
  31. 31.10% of ₹160 =
  32. 32.87 + 8 =
  33. 33.819 ÷ 9 =
  34. 34.112 ÷ 4 =
  35. 35.21² =
  36. 36.116 ÷ 4 =
  37. 37.41 + ? = 100
  38. 38.49 + 5 =
  39. 39.What is the remainder when 124 is divided by 9?
  40. 40.21 × 6 =

Answer key

  1. 31
  2. 84
  3. 136
  4. 84
  5. 484
  6. 65
  7. 576
  8. 395
  9. 21
  10. 79
  11. 164
  12. 51
  13. 80
  14. 156
  15. 57
  16. 52
  17. 38
  18. 128
  19. 328
  20. 55
  21. 529
  22. 264
  23. 51
  24. 23
  25. 93
  26. 20
  27. 7000
  28. 2
  29. 29
  30. 84
  31. 16
  32. 95
  33. 91
  34. 28
  35. 441
  36. 29
  37. 59
  38. 54
  39. 7
  40. 126

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