← Mixed mental challenge lesson New set →

Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 577 · 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.Double 85 =
  2. 2.27 + 29 =
  3. 3.192 ÷ 8 =
  4. 4.31 × 8 =
  5. 5.81 + ? = 100
  6. 6.26 + 9 =
  7. 7.86 − 38 =
  8. 8.78 × 8 =
  9. 9.10% of ₹520 =
  10. 10.84 − 33 =
  11. 11.10% of ₹900 =
  12. 12.18² =
  13. 13.96 − 52 =
  14. 14.You start your homework at 8:50 and finish at 11:15. How many minutes did you work?
  15. 15.101 − 85 =
  16. 16.529 − 478 =
  17. 17.55 × 4 =
  18. 18.10% of ₹290 =
  19. 19.24² =
  20. 20.23² =
  21. 21.77 + 8 =
  22. 22.2 + ? = 10
  23. 23.74 × 4 =
  24. 24.Best estimate of 155 + 213? (a) 600 (b) 400 (c) 200
  25. 25.46 + 5 =
  26. 26.5 + 9 =
  27. 27.61 × 4 =
  28. 28.64 + 66 =
  29. 29.Best estimate of 320 + 397? (a) 900 (b) 700 (c) 500
  30. 30.27² =
  31. 31.81 − 29 =
  32. 32.You buy a cricket ball for ₹492 and pay with a ₹500 note. How much change do you get, in rupees?
  33. 33.3 + ? = 10
  34. 34.44 + ? = 100
  35. 35.16 × 8 =
  36. 36.519 − 491 =
  37. 37.17² =
  38. 38.568 ÷ 8 =
  39. 39.65 + 21 =
  40. 40.57 + ? = 100

Answer key

  1. 170
  2. 56
  3. 24
  4. 248
  5. 19
  6. 35
  7. 48
  8. 624
  9. 52
  10. 51
  11. 90
  12. 324
  13. 44
  14. 145
  15. 16
  16. 51
  17. 220
  18. 29
  19. 576
  20. 529
  21. 85
  22. 8
  23. 296
  24. 400
  25. 51
  26. 14
  27. 244
  28. 130
  29. 700
  30. 729
  31. 52
  32. 8
  33. 7
  34. 56
  35. 128
  36. 28
  37. 289
  38. 71
  39. 86
  40. 43

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