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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 236 · 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. 1.40 − 9 =
  2. 2.80 + 22 =
  3. 3.711 ÷ 9 =
  4. 4.50% of ₹550 =
  5. 5.84 − 68 =
  6. 6.76 + 19 =
  7. 7.13² =
  8. 8.192 ÷ 4 =
  9. 9.5% of ₹320 =
  10. 10.390 ÷ 5 =
  11. 11.51 ÷ 3 =
  12. 12.180 ÷ 4 =
  13. 13.26 × 3 =
  14. 14.264 ÷ 4 =
  15. 15.1 + ? = 10
  16. 16.47 children stand in rows of 9. How many full rows can they make?
  17. 17.39 + 8 =
  18. 18.126 ÷ 6 =
  19. 19.15 × 4 =
  20. 20.21² =
  21. 21.66 + 9 =
  22. 22.5% of ₹280 =
  23. 23.92 − 29 =
  24. 24.10% of ₹880 =
  25. 25.48 ÷ 4 =
  26. 26.47 × 4 =
  27. 27.22² =
  28. 28.A film starts at 8:25 and ends at 11:30. How many minutes long is the film?
  29. 29.1002 − 978 =
  30. 30.Best estimate of 46 × 92? (a) 450 (b) 4500 (c) 45000
  31. 31.Half of 92 =
  32. 32.36 × 8 =
  33. 33.You buy a bag of mangoes for ₹409 and pay with a ₹500 note. How much change do you get, in rupees?
  34. 34.Best estimate of 327 + 429? (a) 500 (b) 700 (c) 900
  35. 35.23 + 34 =
  36. 36.2 + ? = 10
  37. 37.19 + 2 =
  38. 38.10% of ₹90 =
  39. 39.Double 19 =
  40. 40.27² =

Answer key

  1. 31
  2. 102
  3. 79
  4. 275
  5. 16
  6. 95
  7. 169
  8. 48
  9. 16
  10. 78
  11. 17
  12. 45
  13. 78
  14. 66
  15. 9
  16. 5
  17. 47
  18. 21
  19. 60
  20. 441
  21. 75
  22. 14
  23. 63
  24. 88
  25. 12
  26. 188
  27. 484
  28. 185
  29. 24
  30. 4500
  31. 46
  32. 288
  33. 91
  34. 700
  35. 57
  36. 8
  37. 21
  38. 9
  39. 38
  40. 729

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