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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 291 · 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. 1.25% of ₹510 =
  2. 2.A cricket match starts at 4:40 and the first innings ends at 6:00. How many minutes did the innings last?
  3. 3.47 + 63 =
  4. 4.296 ÷ 8 =
  5. 5.A cricket match starts at 1:15 and the first innings ends at 2:00. How many minutes did the innings last?
  6. 6.Half of 178 =
  7. 7.43 × 4 =
  8. 8.230 − 183 =
  9. 9.17² =
  10. 10.Double 98 =
  11. 11.96 × 5 =
  12. 12.68 + 42 =
  13. 13.144 ÷ 8 =
  14. 14.86 × 5 =
  15. 15.117 − 75 =
  16. 16.58 + 44 =
  17. 17.75 × 4 =
  18. 18.14 × 8 =
  19. 19.Best estimate of 86 × 17? (a) 18000 (b) 180 (c) 1800
  20. 20.288 ÷ 8 =
  21. 21.13 × 4 =
  22. 22.112 ÷ 8 =
  23. 23.317 − 278 =
  24. 24.A train leaves at 4:50 and reaches the next city at 7:55. How many minutes is the journey?
  25. 25.24 + 25 =
  26. 26.79 + 6 =
  27. 27.68 + 19 =
  28. 28.26 × 4 =
  29. 29.69 − 33 =
  30. 30.You buy a box of crayons for ₹99 and pay with a ₹100 note. How much change do you get, in rupees?
  31. 31.86 + 12 =
  32. 32.16 + 19 =
  33. 33.5% of ₹240 =
  34. 34.11² =
  35. 35.306 − 278 =
  36. 36.2 + ? = 10
  37. 37.Half of 180 =
  38. 38.116 ÷ 4 =
  39. 39.62 − 33 =
  40. 40.25² =

Answer key

  1. 127.5
  2. 80
  3. 110
  4. 37
  5. 45
  6. 89
  7. 172
  8. 47
  9. 289
  10. 196
  11. 480
  12. 110
  13. 18
  14. 430
  15. 42
  16. 102
  17. 300
  18. 112
  19. 1800
  20. 36
  21. 52
  22. 14
  23. 39
  24. 185
  25. 49
  26. 85
  27. 87
  28. 104
  29. 36
  30. 1
  31. 98
  32. 35
  33. 12
  34. 121
  35. 28
  36. 8
  37. 90
  38. 29
  39. 29
  40. 625

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