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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 309 · 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. 1.22 × 4 =
  2. 2.69 + 9 =
  3. 3.285 ÷ 3 =
  4. 4.7 + 6 =
  5. 5.603 − 99 =
  6. 6.136 ÷ 8 =
  7. 7.88 + 5 =
  8. 8.79 − 69 =
  9. 9.59 − 42 =
  10. 10.93 − 19 =
  11. 11.164 ÷ 4 =
  12. 12.144 ÷ 8 =
  13. 13.You start your homework at 7:20 and finish at 9:20. How many minutes did you work?
  14. 14.You start your homework at 3:15 and finish at 5:25. How many minutes did you work?
  15. 15.512 ÷ 8 =
  16. 16.You buy a notebook for ₹50 and pay with a ₹100 note. How much change do you get, in rupees?
  17. 17.6 + ? = 10
  18. 18.73 + 71 =
  19. 19.25 × 4 =
  20. 20.328 − 284 =
  21. 21.106 − 69 =
  22. 22.17 + 9 =
  23. 23.80 children stand in rows of 7. How many full rows can they make?
  24. 24.19 × 8 =
  25. 25.65 + 7 =
  26. 26.19 + 9 =
  27. 27.29² =
  28. 28.56 − 31 =
  29. 29.140 ÷ 5 =
  30. 30.16 + ? = 100
  31. 31.20 + ? = 100
  32. 32.103 − 67 =
  33. 33.21² =
  34. 34.You buy a box of crayons for ₹14 and pay with a ₹100 note. How much change do you get, in rupees?
  35. 35.48 + 61 =
  36. 36.53 − 25 =
  37. 37.539 ÷ 7 =
  38. 38.43 × 6 =
  39. 39.69 + 19 =
  40. 40.23 + ? = 100

Answer key

  1. 88
  2. 78
  3. 95
  4. 13
  5. 504
  6. 17
  7. 93
  8. 10
  9. 17
  10. 74
  11. 41
  12. 18
  13. 120
  14. 130
  15. 64
  16. 50
  17. 4
  18. 144
  19. 100
  20. 44
  21. 37
  22. 26
  23. 11
  24. 152
  25. 72
  26. 28
  27. 841
  28. 25
  29. 28
  30. 84
  31. 80
  32. 36
  33. 441
  34. 86
  35. 109
  36. 28
  37. 77
  38. 258
  39. 88
  40. 77

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