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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 337 · 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. 1.20 + ? = 100
  2. 2.12 × 6 =
  3. 3.29² =
  4. 4.19 + 19 =
  5. 5.245 + 99 =
  6. 6.38 + 9 =
  7. 7.27 + 28 =
  8. 8.46 × 7 =
  9. 9.68 ÷ 4 =
  10. 10.Best estimate of 77 × 94? (a) 7200 (b) 72000 (c) 720
  11. 11.27 × 8 =
  12. 12.25 + 27 =
  13. 13.You buy a pencil box for ₹50 and pay with a ₹100 note. How much change do you get, in rupees?
  14. 14.228 ÷ 6 =
  15. 15.67 + ? = 100
  16. 16.50% of ₹630 =
  17. 17.70 + ? = 100
  18. 18.19 + 21 =
  19. 19.28 + 27 =
  20. 20.2 + ? = 10
  21. 21.28 + 9 =
  22. 22.31 + 27 =
  23. 23.51 × 3 =
  24. 24.92 laddoos are packed in boxes of 8. How many laddoos are left over?
  25. 25.10% of ₹320 =
  26. 26.59 + 78 =
  27. 27.You buy a box of crayons for ₹198 and pay with a ₹500 note. How much change do you get, in rupees?
  28. 28.510 ÷ 6 =
  29. 29.6 + 8 =
  30. 30.Best estimate of 16 × 30? (a) 600 (b) 60 (c) 6000
  31. 31.227 − 192 =
  32. 32.37 + 31 =
  33. 33.85 + 8 =
  34. 34.28 + 29 =
  35. 35.You buy a water bottle for ₹26 and a pen for ₹19. You pay with a ₹100 note. How much change do you get, in rupees?
  36. 36.50% of ₹130 =
  37. 37.26² =
  38. 38.75 − 36 =
  39. 39.112 ÷ 8 =
  40. 40.39 + 8 =

Answer key

  1. 80
  2. 72
  3. 841
  4. 38
  5. 344
  6. 47
  7. 55
  8. 322
  9. 17
  10. 7200
  11. 216
  12. 52
  13. 50
  14. 38
  15. 33
  16. 315
  17. 30
  18. 40
  19. 55
  20. 8
  21. 37
  22. 58
  23. 153
  24. 4
  25. 32
  26. 137
  27. 302
  28. 85
  29. 14
  30. 600
  31. 35
  32. 68
  33. 93
  34. 57
  35. 55
  36. 65
  37. 676
  38. 39
  39. 14
  40. 47

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