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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 35 · 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. 1.21² =
  2. 2.48 + ? = 100
  3. 3.28 × 8 =
  4. 4.62 − 48 =
  5. 5.11 + 12 =
  6. 6.30 + 29 =
  7. 7.5% of ₹530 =
  8. 8.1028 − 986 =
  9. 9.7 + ? = 10
  10. 10.144 ÷ 8 =
  11. 11.You start your homework at 6:40 and finish at 7:35. How many minutes did you work?
  12. 12.95 ÷ 5 =
  13. 13.17² =
  14. 14.21 + 23 =
  15. 15.Best estimate of 17 × 26? (a) 600 (b) 6000 (c) 60
  16. 16.43 × 4 =
  17. 17.50% of ₹550 =
  18. 18.652 + 99 =
  19. 19.You buy a storybook for ₹123 and pay with a ₹500 note. How much change do you get, in rupees?
  20. 20.Double 16 =
  21. 21.You start your homework at 5:00 and finish at 7:00. How many minutes did you work?
  22. 22.175 ÷ 5 =
  23. 23.65 − 44 =
  24. 24.Double 57 =
  25. 25.A train leaves at 4:00 and reaches the next city at 7:15. How many minutes is the journey?
  26. 26.72 − 47 =
  27. 27.39 + 4 =
  28. 28.16 + 7 =
  29. 29.Double 94 =
  30. 30.What is the remainder when 31 is divided by 7?
  31. 31.22² =
  32. 32.47 × 4 =
  33. 33.62 − 29 =
  34. 34.15 + 6 =
  35. 35.26 + ? = 100
  36. 36.9 + ? = 10
  37. 37.10 + 9 =
  38. 38.26 × 8 =
  39. 39.25 + 9 =
  40. 40.25 + 64 =

Answer key

  1. 441
  2. 52
  3. 224
  4. 14
  5. 23
  6. 59
  7. 26.5
  8. 42
  9. 3
  10. 18
  11. 55
  12. 19
  13. 289
  14. 44
  15. 600
  16. 172
  17. 275
  18. 751
  19. 377
  20. 32
  21. 120
  22. 35
  23. 21
  24. 114
  25. 195
  26. 25
  27. 43
  28. 23
  29. 188
  30. 3
  31. 484
  32. 188
  33. 33
  34. 21
  35. 74
  36. 1
  37. 19
  38. 208
  39. 34
  40. 89

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