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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 146 · 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. 1.5% of ₹280 =
  2. 2.26 + 27 =
  3. 3.65 + 52 =
  4. 4.510 − 490 =
  5. 5.82 − 47 =
  6. 6.Half of 196 =
  7. 7.80 + 81 =
  8. 8.24 + 25 =
  9. 9.6 + 5 =
  10. 10.Half of 74 =
  11. 11.73 + 25 =
  12. 12.5% of ₹790 =
  13. 13.25% of ₹500 =
  14. 14.68 + 6 =
  15. 15.87 − 29 =
  16. 16.320 − 279 =
  17. 17.528 − 498 =
  18. 18.Best estimate of 23 × 86? (a) 1800 (b) 18000 (c) 180
  19. 19.Double 95 =
  20. 20.6 + ? = 10
  21. 21.5% of ₹720 =
  22. 22.45 × 4 =
  23. 23.505 − 478 =
  24. 24.222 ÷ 6 =
  25. 25.You buy a pencil box for ₹447 and pay with a ₹500 note. How much change do you get, in rupees?
  26. 26.2 + ? = 10
  27. 27.17 + 18 =
  28. 28.49 + 6 =
  29. 29.19 + 9 =
  30. 30.516 − 99 =
  31. 31.21² =
  32. 32.You buy a kite for ₹368 and pay with a ₹500 note. How much change do you get, in rupees?
  33. 33.Double 34 =
  34. 34.Best estimate of 29 × 90? (a) 27000 (b) 270 (c) 2700
  35. 35.69 laddoos are packed in boxes of 5. How many laddoos are left over?
  36. 36.16 + 17 =
  37. 37.53 × 5 =
  38. 38.1027 − 995 =
  39. 39.27 × 9 =
  40. 40.5% of ₹50 =

Answer key

  1. 14
  2. 53
  3. 117
  4. 20
  5. 35
  6. 98
  7. 161
  8. 49
  9. 11
  10. 37
  11. 98
  12. 39.5
  13. 125
  14. 74
  15. 58
  16. 41
  17. 30
  18. 1800
  19. 190
  20. 4
  21. 36
  22. 180
  23. 27
  24. 37
  25. 53
  26. 8
  27. 35
  28. 55
  29. 28
  30. 417
  31. 441
  32. 132
  33. 68
  34. 2700
  35. 4
  36. 33
  37. 265
  38. 32
  39. 243
  40. 2.5

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