← Mixed mental challenge lesson New set →

Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 521 · 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. 1.1 + ? = 10
  2. 2.324 − 283 =
  3. 3.A train leaves at 8:15 and reaches the next city at 9:20. How many minutes is the journey?
  4. 4.10% of ₹570 =
  5. 5.66 + ? = 100
  6. 6.72 − 27 =
  7. 7.1022 − 982 =
  8. 8.17² =
  9. 9.78 ÷ 3 =
  10. 10.25% of ₹440 =
  11. 11.14 × 4 =
  12. 12.Best estimate of 47 × 20? (a) 10000 (b) 1000 (c) 100
  13. 13.You buy a bag of mangoes for ₹66 and pay with a ₹100 note. How much change do you get, in rupees?
  14. 14.10% of ₹110 =
  15. 15.Best estimate of 785 + 328? (a) 1300 (b) 1100 (c) 900
  16. 16.53 − 41 =
  17. 17.66 + 35 =
  18. 18.28² =
  19. 19.10 + 12 =
  20. 20.5% of ₹450 =
  21. 21.5 + ? = 10
  22. 22.504 − 493 =
  23. 23.72 − 44 =
  24. 24.41 + 55 =
  25. 25.13 × 8 =
  26. 26.864 ÷ 9 =
  27. 27.62 + ? = 100
  28. 28.8 + ? = 10
  29. 29.You buy a box of crayons for ₹77 and pay with a ₹100 note. How much change do you get, in rupees?
  30. 30.69 + 82 =
  31. 31.91 × 6 =
  32. 32.232 ÷ 8 =
  33. 33.Half of 116 =
  34. 34.Half of 174 =
  35. 35.54 × 7 =
  36. 36.603 + 99 =
  37. 37.22 + 23 =
  38. 38.15 × 8 =
  39. 39.62 − 22 =
  40. 40.113 − 97 =

Answer key

  1. 9
  2. 41
  3. 65
  4. 57
  5. 34
  6. 45
  7. 40
  8. 289
  9. 26
  10. 110
  11. 56
  12. 1000
  13. 34
  14. 11
  15. 1100
  16. 12
  17. 101
  18. 784
  19. 22
  20. 22.5
  21. 5
  22. 11
  23. 28
  24. 96
  25. 104
  26. 96
  27. 38
  28. 2
  29. 23
  30. 151
  31. 546
  32. 29
  33. 58
  34. 87
  35. 378
  36. 702
  37. 45
  38. 120
  39. 40
  40. 16

Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths