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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 761 · 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. 1.152 ÷ 8 =
  2. 2.200 ÷ 8 =
  3. 3.24 + 23 =
  4. 4.You buy a bag of mangoes for ₹31 and pay with a ₹100 note. How much change do you get, in rupees?
  5. 5.20 + ? = 100
  6. 6.You buy a bag of mangoes for ₹408 and pay with a ₹500 note. How much change do you get, in rupees?
  7. 7.54 + ? = 100
  8. 8.77 + 29 =
  9. 9.41 × 4 =
  10. 10.104 − 75 =
  11. 11.16 + 29 =
  12. 12.Best estimate of 740 + 675? (a) 1200 (b) 1400 (c) 1600
  13. 13.69 − 46 =
  14. 14.81 × 5 =
  15. 15.28 + 5 =
  16. 16.You buy a water bottle for ₹32 and pay with a ₹100 note. How much change do you get, in rupees?
  17. 17.32 + 36 =
  18. 18.7 + 6 =
  19. 19.8 + 7 =
  20. 20.390 ÷ 6 =
  21. 21.45 + 9 =
  22. 22.10% of ₹860 =
  23. 23.63 × 6 =
  24. 24.410 − 99 =
  25. 25.25% of ₹360 =
  26. 26.101 − 97 =
  27. 27.116 ÷ 4 =
  28. 28.82 − 51 =
  29. 29.54 − 29 =
  30. 30.Half of 146 =
  31. 31.220 ÷ 4 =
  32. 32.1 + ? = 10
  33. 33.58 × 4 =
  34. 34.741 + 99 =
  35. 35.Best estimate of 223 + 589? (a) 600 (b) 1000 (c) 800
  36. 36.53 − 36 =
  37. 37.32 laddoos are packed in boxes of 5. How many laddoos are left over?
  38. 38.14 + 16 =
  39. 39.45 + 8 =
  40. 40.57 × 4 =

Answer key

  1. 19
  2. 25
  3. 47
  4. 69
  5. 80
  6. 92
  7. 46
  8. 106
  9. 164
  10. 29
  11. 45
  12. 1400
  13. 23
  14. 405
  15. 33
  16. 68
  17. 68
  18. 13
  19. 15
  20. 65
  21. 54
  22. 86
  23. 378
  24. 311
  25. 90
  26. 4
  27. 29
  28. 31
  29. 25
  30. 73
  31. 55
  32. 9
  33. 232
  34. 840
  35. 800
  36. 17
  37. 2
  38. 30
  39. 53
  40. 228

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