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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 460 · 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. 1.24 × 4 =
  2. 2.78 − 29 =
  3. 3.6 + 7 =
  4. 4.485 + 99 =
  5. 5.151 − 99 =
  6. 6.25% of ₹720 =
  7. 7.64 + 9 =
  8. 8.17 + 19 =
  9. 9.213 ÷ 3 =
  10. 10.67 × 9 =
  11. 11.45 + 75 =
  12. 12.You buy a kite for ₹266 and pay with a ₹500 note. How much change do you get, in rupees?
  13. 13.11 + 10 =
  14. 14.21² =
  15. 15.260 + 99 =
  16. 16.56 + 7 =
  17. 17.Best estimate of 96 × 89? (a) 90000 (b) 9000 (c) 900
  18. 18.15 + 7 =
  19. 19.189 ÷ 9 =
  20. 20.16 + 18 =
  21. 21.84 − 72 =
  22. 22.69 + 2 =
  23. 23.12² =
  24. 24.302 − 99 =
  25. 25.72 ÷ 4 =
  26. 26.What is the remainder when 46 is divided by 7?
  27. 27.19 + 21 =
  28. 28.5 + ? = 10
  29. 29.67 × 4 =
  30. 30.66 + 56 =
  31. 31.486 ÷ 9 =
  32. 32.Double 33 =
  33. 33.58 + 5 =
  34. 34.100 − 72 =
  35. 35.106 − 72 =
  36. 36.490 ÷ 5 =
  37. 37.You start your homework at 4:45 and finish at 6:15. How many minutes did you work?
  38. 38.97 − 37 =
  39. 39.59 × 4 =
  40. 40.Half of 166 =

Answer key

  1. 96
  2. 49
  3. 13
  4. 584
  5. 52
  6. 180
  7. 73
  8. 36
  9. 71
  10. 603
  11. 120
  12. 234
  13. 21
  14. 441
  15. 359
  16. 63
  17. 9000
  18. 22
  19. 21
  20. 34
  21. 12
  22. 71
  23. 144
  24. 203
  25. 18
  26. 4
  27. 40
  28. 5
  29. 268
  30. 122
  31. 54
  32. 66
  33. 63
  34. 28
  35. 34
  36. 98
  37. 90
  38. 60
  39. 236
  40. 83

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