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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 560 · 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. 1.47 + 36 =
  2. 2.Half of 112 =
  3. 3.11 + 13 =
  4. 4.97 × 6 =
  5. 5.65 ÷ 5 =
  6. 6.Best estimate of 46 × 79? (a) 4000 (b) 400 (c) 40000
  7. 7.156 ÷ 6 =
  8. 8.1 + ? = 10
  9. 9.315 ÷ 5 =
  10. 10.13 + 19 =
  11. 11.A cricket match starts at 1:55 and the first innings ends at 4:20. How many minutes did the innings last?
  12. 12.56 + 5 =
  13. 13.39 × 8 =
  14. 14.78 + 7 =
  15. 15.64 ÷ 4 =
  16. 16.200 ÷ 4 =
  17. 17.225 − 196 =
  18. 18.8 + 7 =
  19. 19.Best estimate of 64 × 14? (a) 6000 (b) 60 (c) 600
  20. 20.23 × 7 =
  21. 21.264 ÷ 8 =
  22. 22.43 × 4 =
  23. 23.37 + 21 =
  24. 24.95 − 13 =
  25. 25.18² =
  26. 26.136 ÷ 4 =
  27. 27.88 + 6 =
  28. 28.Double 37 =
  29. 29.1004 − 981 =
  30. 30.Half of 70 =
  31. 31.45 + 6 =
  32. 32.What is the remainder when 31 is divided by 5?
  33. 33.57 × 3 =
  34. 34.10% of ₹450 =
  35. 35.76 − 9 =
  36. 36.68 + 4 =
  37. 37.51 × 6 =
  38. 38.26 laddoos are packed in boxes of 6. How many laddoos are left over?
  39. 39.A cricket match starts at 1:35 and the first innings ends at 3:50. How many minutes did the innings last?
  40. 40.16 × 8 =

Answer key

  1. 83
  2. 56
  3. 24
  4. 582
  5. 13
  6. 4000
  7. 26
  8. 9
  9. 63
  10. 32
  11. 145
  12. 61
  13. 312
  14. 85
  15. 16
  16. 50
  17. 29
  18. 15
  19. 600
  20. 161
  21. 33
  22. 172
  23. 58
  24. 82
  25. 324
  26. 34
  27. 94
  28. 74
  29. 23
  30. 35
  31. 51
  32. 1
  33. 171
  34. 45
  35. 67
  36. 72
  37. 306
  38. 2
  39. 135
  40. 128

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