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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 559 · 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. 1.12 + 13 =
  2. 2.Half of 196 =
  3. 3.Double 61 =
  4. 4.108 ÷ 4 =
  5. 5.3 + ? = 10
  6. 6.96 × 5 =
  7. 7.15 + 8 =
  8. 8.29 + 32 =
  9. 9.37 + 16 =
  10. 10.18 + 20 =
  11. 11.97 − 62 =
  12. 12.65 + 12 =
  13. 13.216 ÷ 4 =
  14. 14.18 + 3 =
  15. 15.7 + 8 =
  16. 16.72 + 32 =
  17. 17.10 + 12 =
  18. 18.15 + 17 =
  19. 19.19 × 4 =
  20. 20.110 laddoos are packed in boxes of 7. How many laddoos are left over?
  21. 21.69 − 21 =
  22. 22.You buy a bag of mangoes for ₹59 and pay with a ₹100 note. How much change do you get, in rupees?
  23. 23.50% of ₹200 =
  24. 24.99 − 73 =
  25. 25.Best estimate of 156 + 253? (a) 700 (b) 500 (c) 300
  26. 26.21² =
  27. 27.29² =
  28. 28.40 + ? = 100
  29. 29.248 ÷ 8 =
  30. 30.48 + 71 =
  31. 31.87 × 6 =
  32. 32.37 laddoos are packed in boxes of 3. How many laddoos are left over?
  33. 33.Best estimate of 466 + 155? (a) 900 (b) 700 (c) 500
  34. 34.260 ÷ 5 =
  35. 35.5% of ₹620 =
  36. 36.A cricket match starts at 1:55 and the first innings ends at 4:35. How many minutes did the innings last?
  37. 37.12² =
  38. 38.34 × 4 =
  39. 39.Double 38 =
  40. 40.49 + 61 =

Answer key

  1. 25
  2. 98
  3. 122
  4. 27
  5. 7
  6. 480
  7. 23
  8. 61
  9. 53
  10. 38
  11. 35
  12. 77
  13. 54
  14. 21
  15. 15
  16. 104
  17. 22
  18. 32
  19. 76
  20. 5
  21. 48
  22. 41
  23. 100
  24. 26
  25. 500
  26. 441
  27. 841
  28. 60
  29. 31
  30. 119
  31. 522
  32. 1
  33. 700
  34. 52
  35. 31
  36. 160
  37. 144
  38. 136
  39. 76
  40. 110

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