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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 565 · 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 ₹170 =
  2. 2.You buy a storybook for ₹20 and a pen for ₹40. You pay with a ₹100 note. How much change do you get, in rupees?
  3. 3.9 + 4 =
  4. 4.You start your homework at 5:20 and finish at 6:30. How many minutes did you work?
  5. 5.56 + 8 =
  6. 6.5% of ₹790 =
  7. 7.5 + ? = 10
  8. 8.35 + 6 =
  9. 9.34 × 8 =
  10. 10.36 ÷ 3 =
  11. 11.Double 55 =
  12. 12.18 + 20 =
  13. 13.22 + 24 =
  14. 14.82 + 17 =
  15. 15.35 + 7 =
  16. 16.25 + 27 =
  17. 17.Best estimate of 380 + 244? (a) 800 (b) 400 (c) 600
  18. 18.243 ÷ 9 =
  19. 19.29 + ? = 100
  20. 20.79 + 6 =
  21. 21.50 + 34 =
  22. 22.60 − 35 =
  23. 23.Double 18 =
  24. 24.3 + ? = 10
  25. 25.1 + ? = 10
  26. 26.304 − 298 =
  27. 27.86 + 77 =
  28. 28.18² =
  29. 29.80 − 53 =
  30. 30.308 ÷ 4 =
  31. 31.A film starts at 2:50 and ends at 3:50. How many minutes long is the film?
  32. 32.39 × 8 =
  33. 33.76 × 8 =
  34. 34.82 − 14 =
  35. 35.25 + 8 =
  36. 36.13 + 14 =
  37. 37.What is the remainder when 77 is divided by 8?
  38. 38.37 × 8 =
  39. 39.9 + 2 =
  40. 40.You start your homework at 5:25 and finish at 6:15. How many minutes did you work?

Answer key

  1. 42.5
  2. 40
  3. 13
  4. 70
  5. 64
  6. 39.5
  7. 5
  8. 41
  9. 272
  10. 12
  11. 110
  12. 38
  13. 46
  14. 99
  15. 42
  16. 52
  17. 600
  18. 27
  19. 71
  20. 85
  21. 84
  22. 25
  23. 36
  24. 7
  25. 9
  26. 6
  27. 163
  28. 324
  29. 27
  30. 77
  31. 60
  32. 312
  33. 608
  34. 68
  35. 33
  36. 27
  37. 5
  38. 296
  39. 11
  40. 50

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