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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 299 · 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. 1.30 + 9 =
  2. 2.11 + 12 =
  3. 3.34 × 8 =
  4. 4.A film starts at 2:55 and ends at 5:55. How many minutes long is the film?
  5. 5.81 − 66 =
  6. 6.63 × 4 =
  7. 7.65 − 46 =
  8. 8.39 × 4 =
  9. 9.3 + ? = 10
  10. 10.264 ÷ 4 =
  11. 11.73 + 29 =
  12. 12.248 ÷ 8 =
  13. 13.76 ÷ 4 =
  14. 14.307 − 284 =
  15. 15.52 − 32 =
  16. 16.24² =
  17. 17.21 + 22 =
  18. 18.52 − 34 =
  19. 19.232 ÷ 8 =
  20. 20.You buy a water bottle for ₹14 and a pen for ₹39. You pay with a ₹100 note. How much change do you get, in rupees?
  21. 21.68 ÷ 4 =
  22. 22.224 ÷ 8 =
  23. 23.105 − 78 =
  24. 24.23 × 6 =
  25. 25.6 + 7 =
  26. 26.21 + 23 =
  27. 27.196 ÷ 4 =
  28. 28.220 ÷ 4 =
  29. 29.54 − 17 =
  30. 30.107 laddoos are packed in boxes of 8. How many laddoos are left over?
  31. 31.119 ÷ 7 =
  32. 32.You buy a notebook for ₹25 and pay with a ₹100 note. How much change do you get, in rupees?
  33. 33.50% of ₹880 =
  34. 34.5% of ₹300 =
  35. 35.303 − 287 =
  36. 36.431 − 99 =
  37. 37.20 + 22 =
  38. 38.72 × 4 =
  39. 39.49 + 61 =
  40. 40.280 ÷ 8 =

Answer key

  1. 39
  2. 23
  3. 272
  4. 180
  5. 15
  6. 252
  7. 19
  8. 156
  9. 7
  10. 66
  11. 102
  12. 31
  13. 19
  14. 23
  15. 20
  16. 576
  17. 43
  18. 18
  19. 29
  20. 47
  21. 17
  22. 28
  23. 27
  24. 138
  25. 13
  26. 44
  27. 49
  28. 55
  29. 37
  30. 3
  31. 17
  32. 75
  33. 440
  34. 15
  35. 16
  36. 332
  37. 42
  38. 288
  39. 110
  40. 35

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