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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 997 · 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. 1.88 + ? = 100
  2. 2.28² =
  3. 3.74 − 14 =
  4. 4.15 + 17 =
  5. 5.212 ÷ 4 =
  6. 6.47 × 4 =
  7. 7.372 ÷ 6 =
  8. 8.Half of 70 =
  9. 9.104 − 59 =
  10. 10.19² =
  11. 11.117 − 87 =
  12. 12.1019 − 986 =
  13. 13.13 + 15 =
  14. 14.6 + ? = 10
  15. 15.86 − 41 =
  16. 16.22 + ? = 100
  17. 17.Half of 126 =
  18. 18.Double 96 =
  19. 19.24 × 4 =
  20. 20.A film starts at 1:20 and ends at 2:05. How many minutes long is the film?
  21. 21.You buy a box of crayons for ₹78 and pay with a ₹100 note. How much change do you get, in rupees?
  22. 22.Double 47 =
  23. 23.68 ÷ 4 =
  24. 24.Best estimate of 545 + 160? (a) 500 (b) 700 (c) 900
  25. 25.A train leaves at 8:10 and reaches the next city at 10:55. How many minutes is the journey?
  26. 26.135 ÷ 5 =
  27. 27.A cricket match starts at 7:45 and the first innings ends at 8:30. How many minutes did the innings last?
  28. 28.89 − 53 =
  29. 29.68 − 57 =
  30. 30.20 laddoos are packed in boxes of 3. How many laddoos are left over?
  31. 31.70 − 17 =
  32. 32.99 × 7 =
  33. 33.464 − 99 =
  34. 34.44 + ? = 100
  35. 35.36 + 52 =
  36. 36.Best estimate of 601 + 800? (a) 1200 (b) 1600 (c) 1400
  37. 37.5% of ₹800 =
  38. 38.29 + 5 =
  39. 39.Best estimate of 394 + 337? (a) 500 (b) 700 (c) 900
  40. 40.Half of 136 =

Answer key

  1. 12
  2. 784
  3. 60
  4. 32
  5. 53
  6. 188
  7. 62
  8. 35
  9. 45
  10. 361
  11. 30
  12. 33
  13. 28
  14. 4
  15. 45
  16. 78
  17. 63
  18. 192
  19. 96
  20. 45
  21. 22
  22. 94
  23. 17
  24. 700
  25. 165
  26. 27
  27. 45
  28. 36
  29. 11
  30. 2
  31. 53
  32. 693
  33. 365
  34. 56
  35. 88
  36. 1400
  37. 40
  38. 34
  39. 700
  40. 68

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