← Mixed mental challenge lesson New set →

Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 439 · 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 34 =
  2. 2.138 ÷ 6 =
  3. 3.39 − 9 =
  4. 4.16 × 8 =
  5. 5.Best estimate of 768 + 681? (a) 1300 (b) 1500 (c) 1700
  6. 6.511 − 494 =
  7. 7.49 + 19 =
  8. 8.50 + 66 =
  9. 9.37 laddoos are packed in boxes of 6. How many laddoos are left over?
  10. 10.102 − 86 =
  11. 11.15 × 4 =
  12. 12.Best estimate of 194 + 204? (a) 200 (b) 400 (c) 600
  13. 13.72 + 24 =
  14. 14.56 − 21 =
  15. 15.29 + 17 =
  16. 16.322 − 99 =
  17. 17.25% of ₹200 =
  18. 18.10% of ₹110 =
  19. 19.29 × 4 =
  20. 20.30 + 19 =
  21. 21.71 × 9 =
  22. 22.45 + 7 =
  23. 23.80 − 26 =
  24. 24.760 ÷ 8 =
  25. 25.12 × 8 =
  26. 26.20 × 8 =
  27. 27.1008 − 977 =
  28. 28.1 + ? = 10
  29. 29.18 × 8 =
  30. 30.19 + ? = 100
  31. 31.75 + 29 =
  32. 32.52 − 23 =
  33. 33.43 + 63 =
  34. 34.136 ÷ 8 =
  35. 35.34 × 4 =
  36. 36.17 + ? = 100
  37. 37.80 − 17 =
  38. 38.212 − 187 =
  39. 39.116 − 78 =
  40. 40.58 laddoos are packed in boxes of 6. How many laddoos are left over?

Answer key

  1. 68
  2. 23
  3. 30
  4. 128
  5. 1500
  6. 17
  7. 68
  8. 116
  9. 1
  10. 16
  11. 60
  12. 400
  13. 96
  14. 35
  15. 46
  16. 223
  17. 50
  18. 11
  19. 116
  20. 49
  21. 639
  22. 52
  23. 54
  24. 95
  25. 96
  26. 160
  27. 31
  28. 9
  29. 144
  30. 81
  31. 104
  32. 29
  33. 106
  34. 17
  35. 136
  36. 83
  37. 63
  38. 25
  39. 38
  40. 4

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