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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 517 · 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. 1.6 + 7 =
  2. 2.168 + 99 =
  3. 3.192 ÷ 4 =
  4. 4.25% of ₹80 =
  5. 5.49 + 54 =
  6. 6.8 + 7 =
  7. 7.25% of ₹50 =
  8. 8.7 + 8 =
  9. 9.29 × 4 =
  10. 10.25 + 83 =
  11. 11.32 × 5 =
  12. 12.25% of ₹400 =
  13. 13.54 + 19 =
  14. 14.What is the remainder when 39 is divided by 5?
  15. 15.79 × 5 =
  16. 16.A cricket match starts at 1:40 and the first innings ends at 3:10. How many minutes did the innings last?
  17. 17.15² =
  18. 18.Half of 70 =
  19. 19.160 ÷ 8 =
  20. 20.11 + 13 =
  21. 21.208 ÷ 4 =
  22. 22.16² =
  23. 23.Best estimate of 66 × 86? (a) 630 (b) 6300 (c) 63000
  24. 24.37 − 9 =
  25. 25.64 − 48 =
  26. 26.93 ÷ 3 =
  27. 27.You buy a bag of mangoes for ₹330 and pay with a ₹500 note. How much change do you get, in rupees?
  28. 28.9 + ? = 10
  29. 29.87 + 5 =
  30. 30.Half of 48 =
  31. 31.42 − 9 =
  32. 32.28 + 56 =
  33. 33.73 + 13 =
  34. 34.You buy a cricket ball for ₹177 and pay with a ₹500 note. How much change do you get, in rupees?
  35. 35.65 + 73 =
  36. 36.93 laddoos are packed in boxes of 6. How many laddoos are left over?
  37. 37.26 + 19 =
  38. 38.14 × 6 =
  39. 39.144 ÷ 4 =
  40. 40.2 + ? = 10

Answer key

  1. 13
  2. 267
  3. 48
  4. 20
  5. 103
  6. 15
  7. 12.5
  8. 15
  9. 116
  10. 108
  11. 160
  12. 100
  13. 73
  14. 4
  15. 395
  16. 90
  17. 225
  18. 35
  19. 20
  20. 24
  21. 52
  22. 256
  23. 6300
  24. 28
  25. 16
  26. 31
  27. 170
  28. 1
  29. 92
  30. 24
  31. 33
  32. 84
  33. 86
  34. 323
  35. 138
  36. 3
  37. 45
  38. 84
  39. 36
  40. 8

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