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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 860 · 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. 1.3 + ? = 10
  2. 2.62 + 19 =
  3. 3.21² =
  4. 4.100 − 67 =
  5. 5.You buy a storybook for ₹453 and pay with a ₹500 note. How much change do you get, in rupees?
  6. 6.Best estimate of 79 × 27? (a) 240 (b) 24000 (c) 2400
  7. 7.Double 35 =
  8. 8.12 + 14 =
  9. 9.10% of ₹420 =
  10. 10.71 × 7 =
  11. 11.30 + 41 =
  12. 12.21 + ? = 100
  13. 13.Best estimate of 34 × 13? (a) 300 (b) 3000 (c) 30
  14. 14.221 − 188 =
  15. 15.Half of 152 =
  16. 16.296 ÷ 8 =
  17. 17.You buy a bag of mangoes for ₹73 and pay with a ₹100 note. How much change do you get, in rupees?
  18. 18.180 ÷ 5 =
  19. 19.Half of 56 =
  20. 20.483 ÷ 7 =
  21. 21.2 + ? = 10
  22. 22.Double 87 =
  23. 23.10% of ₹100 =
  24. 24.Best estimate of 17 × 27? (a) 6000 (b) 60 (c) 600
  25. 25.97 children stand in rows of 7. How many full rows can they make?
  26. 26.88 − 41 =
  27. 27.54 + 19 =
  28. 28.Best estimate of 506 + 249? (a) 900 (b) 700 (c) 500
  29. 29.Half of 84 =
  30. 30.26 × 7 =
  31. 31.A train leaves at 1:05 and reaches the next city at 2:20. How many minutes is the journey?
  32. 32.60 ÷ 4 =
  33. 33.16² =
  34. 34.91 − 24 =
  35. 35.Best estimate of 741 + 224? (a) 900 (b) 1100 (c) 700
  36. 36.301 − 280 =
  37. 37.25% of ₹150 =
  38. 38.78 − 54 =
  39. 39.88 + 21 =
  40. 40.Double 44 =

Answer key

  1. 7
  2. 81
  3. 441
  4. 33
  5. 47
  6. 2400
  7. 70
  8. 26
  9. 42
  10. 497
  11. 71
  12. 79
  13. 300
  14. 33
  15. 76
  16. 37
  17. 27
  18. 36
  19. 28
  20. 69
  21. 8
  22. 174
  23. 10
  24. 600
  25. 13
  26. 47
  27. 73
  28. 700
  29. 42
  30. 182
  31. 75
  32. 15
  33. 256
  34. 67
  35. 900
  36. 21
  37. 37.5
  38. 24
  39. 109
  40. 88

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