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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 63 · 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. 1.26 + 28 =
  2. 2.39 + 82 =
  3. 3.1007 − 975 =
  4. 4.344 ÷ 4 =
  5. 5.You buy a box of crayons for ₹20 and a pen for ₹35. You pay with a ₹100 note. How much change do you get, in rupees?
  6. 6.385 ÷ 7 =
  7. 7.25² =
  8. 8.67 + 19 =
  9. 9.85 + 7 =
  10. 10.You start your homework at 1:40 and finish at 4:05. How many minutes did you work?
  11. 11.208 ÷ 4 =
  12. 12.34 × 8 =
  13. 13.Half of 120 =
  14. 14.29 + ? = 100
  15. 15.You start your homework at 8:05 and finish at 9:40. How many minutes did you work?
  16. 16.5% of ₹290 =
  17. 17.2 + ? = 10
  18. 18.65 + 31 =
  19. 19.87 + 56 =
  20. 20.15 + 16 =
  21. 21.516 ÷ 6 =
  22. 22.53 + 82 =
  23. 23.12 + 11 =
  24. 24.What is the remainder when 25 is divided by 4?
  25. 25.50% of ₹740 =
  26. 26.9 + 10 =
  27. 27.What is the remainder when 87 is divided by 9?
  28. 28.60 − 29 =
  29. 29.30 + 29 =
  30. 30.35 + 8 =
  31. 31.558 ÷ 9 =
  32. 32.38 − 9 =
  33. 33.You buy a kite for ₹42 and a pen for ₹42. You pay with a ₹100 note. How much change do you get, in rupees?
  34. 34.29 × 8 =
  35. 35.22 + 56 =
  36. 36.Half of 34 =
  37. 37.99 − 67 =
  38. 38.69 × 4 =
  39. 39.28 + 5 =
  40. 40.A cricket match starts at 3:20 and the first innings ends at 4:15. How many minutes did the innings last?

Answer key

  1. 54
  2. 121
  3. 32
  4. 86
  5. 45
  6. 55
  7. 625
  8. 86
  9. 92
  10. 145
  11. 52
  12. 272
  13. 60
  14. 71
  15. 95
  16. 14.5
  17. 8
  18. 96
  19. 143
  20. 31
  21. 86
  22. 135
  23. 23
  24. 1
  25. 370
  26. 19
  27. 6
  28. 31
  29. 59
  30. 43
  31. 62
  32. 29
  33. 16
  34. 232
  35. 78
  36. 17
  37. 32
  38. 276
  39. 33
  40. 55

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