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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 406 · 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.Best estimate of 488 + 621? (a) 1100 (b) 900 (c) 1300
  2. 2.396 ÷ 6 =
  3. 3.61 children stand in rows of 6. How many full rows can they make?
  4. 4.What is the remainder when 24 is divided by 5?
  5. 5.19² =
  6. 6.28 × 5 =
  7. 7.A cricket match starts at 7:20 and the first innings ends at 7:55. How many minutes did the innings last?
  8. 8.96 ÷ 4 =
  9. 9.14 × 5 =
  10. 10.Double 41 =
  11. 11.79 × 6 =
  12. 12.34 × 4 =
  13. 13.You buy a notebook for ₹44 and a pen for ₹23. You pay with a ₹100 note. How much change do you get, in rupees?
  14. 14.312 − 278 =
  15. 15.What is the remainder when 122 is divided by 8?
  16. 16.You buy a cricket ball for ₹28 and pay with a ₹100 note. How much change do you get, in rupees?
  17. 17.24 + ? = 100
  18. 18.84 + 73 =
  19. 19.88 + ? = 100
  20. 20.Best estimate of 37 × 20? (a) 800 (b) 8000 (c) 80
  21. 21.39 + ? = 100
  22. 22.You buy a pencil box for ₹150 and pay with a ₹500 note. How much change do you get, in rupees?
  23. 23.18 + 20 =
  24. 24.Best estimate of 53 × 91? (a) 4500 (b) 45000 (c) 450
  25. 25.10% of ₹200 =
  26. 26.28 + 29 =
  27. 27.You buy a pencil box for ₹23 and a pen for ₹20. You pay with a ₹100 note. How much change do you get, in rupees?
  28. 28.Best estimate of 17 × 56? (a) 120 (b) 12000 (c) 1200
  29. 29.A train leaves at 7:05 and reaches the next city at 9:05. How many minutes is the journey?
  30. 30.You start your homework at 3:15 and finish at 4:10. How many minutes did you work?
  31. 31.What is the remainder when 68 is divided by 8?
  32. 32.28 × 6 =
  33. 33.12² =
  34. 34.A train leaves at 2:40 and reaches the next city at 4:25. How many minutes is the journey?
  35. 35.You start your homework at 2:55 and finish at 5:05. How many minutes did you work?
  36. 36.38 + ? = 100
  37. 37.83 − 57 =
  38. 38.You buy a bag of mangoes for ₹11 and pay with a ₹100 note. How much change do you get, in rupees?
  39. 39.111 ÷ 3 =
  40. 40.55 laddoos are packed in boxes of 8. How many laddoos are left over?

Answer key

  1. 1100
  2. 66
  3. 10
  4. 4
  5. 361
  6. 140
  7. 35
  8. 24
  9. 70
  10. 82
  11. 474
  12. 136
  13. 33
  14. 34
  15. 2
  16. 72
  17. 76
  18. 157
  19. 12
  20. 800
  21. 61
  22. 350
  23. 38
  24. 4500
  25. 20
  26. 57
  27. 57
  28. 1200
  29. 120
  30. 55
  31. 4
  32. 168
  33. 144
  34. 105
  35. 130
  36. 62
  37. 26
  38. 89
  39. 37
  40. 7

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