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Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 874 · 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. 1.39 + 21 =
  2. 2.320 − 99 =
  3. 3.You buy a box of crayons for ₹30 and pay with a ₹100 note. How much change do you get, in rupees?
  4. 4.72 × 4 =
  5. 5.26 × 5 =
  6. 6.17 + 16 =
  7. 7.You buy a cricket ball for ₹34 and pay with a ₹100 note. How much change do you get, in rupees?
  8. 8.1 + ? = 10
  9. 9.73 − 16 =
  10. 10.26 × 4 =
  11. 11.65 − 26 =
  12. 12.38 children stand in rows of 4. How many full rows can they make?
  13. 13.27 + 4 =
  14. 14.15² =
  15. 15.38 + 4 =
  16. 16.36 + 5 =
  17. 17.57 − 45 =
  18. 18.Double 47 =
  19. 19.Best estimate of 60 × 33? (a) 18000 (b) 1800 (c) 180
  20. 20.11 + 13 =
  21. 21.25 + 29 =
  22. 22.18 × 8 =
  23. 23.96 − 57 =
  24. 24.Double 94 =
  25. 25.13 + 12 =
  26. 26.52 × 4 =
  27. 27.186 + 99 =
  28. 28.66 + 71 =
  29. 29.65 + 8 =
  30. 30.17 + 19 =
  31. 31.5% of ₹360 =
  32. 32.Best estimate of 60 × 92? (a) 5400 (b) 540 (c) 54000
  33. 33.5% of ₹240 =
  34. 34.117 ÷ 9 =
  35. 35.483 − 99 =
  36. 36.5% of ₹370 =
  37. 37.26 × 6 =
  38. 38.225 − 178 =
  39. 39.39 × 8 =
  40. 40.Best estimate of 133 + 569? (a) 500 (b) 900 (c) 700

Answer key

  1. 60
  2. 221
  3. 70
  4. 288
  5. 130
  6. 33
  7. 66
  8. 9
  9. 57
  10. 104
  11. 39
  12. 9
  13. 31
  14. 225
  15. 42
  16. 41
  17. 12
  18. 94
  19. 1800
  20. 24
  21. 54
  22. 144
  23. 39
  24. 188
  25. 25
  26. 208
  27. 285
  28. 137
  29. 73
  30. 36
  31. 18
  32. 5400
  33. 12
  34. 13
  35. 384
  36. 18.5
  37. 156
  38. 47
  39. 312
  40. 700

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