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Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 825 · 40 questions
TalentJR

The trick (Choose a trick): × 9 → finger trick; × 4 → double double; × 10, 100, 1000 → slide and add zeros. 37, 12345679 or 111… → magic patterns; reverse and subtract → 1089. Puzzles: find the rule, the total or the leftover days, then check your answer.

NameDateTime takenScore ___ / 40
  1. 1.You have 8 coins. Each coin is ₹1 or ₹2, and together they make ₹13. How many ₹2 coins do you have?
  2. 2.Magic trick! Think of 2. Double it, add 10, halve it, then take away 2. What number do you get?
  3. 3.A father is 41 years old and his son is 7. How old was the father when the son was born?
  4. 4.If today is Saturday, what day will it be after 41 days? (a) Saturday (b) Friday (c) Thursday (d) Monday
  5. 5.A piggy bank has 4 coins of ₹5 and 9 coins of ₹2. How many rupees are in it?
  6. 6.Odd one out: which number is NOT in the 7 times table? (a) 56 (b) 35 (c) 28 (d) 59
  7. 7.1 + 3 + 5 + … + 35 =
  8. 8.Half of 18 =
  9. 9.12345678 × 9 + 9 =
  10. 10.37 × 3 =
  11. 11.The ages of two twins add up to 22. How old is each twin?
  12. 12.9 × 3 =
  13. 13.9 × 5 = 4? — what is the missing digit?
  14. 14.What comes next? 20, 25, 30, 35, ? (a) 40 (b) 35 (c) 45 (d) 41
  15. 15.16 × 1000 =
  16. 16.297 + 792 =
  17. 17.9 × 2 = ?8 — what is the missing digit?
  18. 18.9 × 9 =
  19. 19.Odd one out: which number is NOT in the 8 times table? (a) 16 (b) 48 (c) 61 (d) 40
  20. 20.6 × 1000 =
  21. 21.9 × 8 =
  22. 22.792 + 297 =
  23. 23.If today is Monday, what day was it 52 days ago? (a) Thursday (b) Monday (c) Saturday (d) Friday
  24. 24.Odd one out: which number is NOT in the 6 times table? (a) 30 (b) 12 (c) 24 (d) 38
  25. 25.If today is Sunday, what day was it 59 days ago? (a) Friday (b) Sunday (c) Thursday (d) Wednesday
  26. 26.9 × 10 = 9? — what is the missing digit?
  27. 27.9 × 6 =
  28. 28.Magic square (every row, column and diagonal has the same total): ? 4 9 | 10 6 2 | 3 8 7. What is the missing number?
  29. 29.The ages of two twins add up to 20. How old is each twin?
  30. 30.293 × ? = 2930
  31. 31.Magic square (every row, column and diagonal has the same total): 6 11 4 | ? 7 9 | 10 3 8. What is the missing number?
  32. 32.123 × 9 + 4 =
  33. 33.55 × 4 =
  34. 34.If today is Friday, what day was it 24 days ago? (a) Tuesday (b) Wednesday (c) Friday (d) Monday
  35. 35.1234567 × 8 + 7 =
  36. 36.Magic square (every row, column and diagonal has the same total): ? 12 13 | 10 14 18 | 15 16 11. What is the missing number?
  37. 37.9 × 4 = 3? — what is the missing digit?
  38. 38.786 × ? = 7860
  39. 39.7?66 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
  40. 40.3 × 9 =

Answer key

  1. 5
  2. 5
  3. 34
  4. Friday
  5. 38
  6. 59
  7. 324
  8. 9
  9. 111111111
  10. 111
  11. 11
  12. 27
  13. 5
  14. 40
  15. 16000
  16. 1089
  17. 1
  18. 81
  19. 61
  20. 6000
  21. 72
  22. 1089
  23. Friday
  24. 38
  25. Thursday
  26. 0
  27. 54
  28. 5
  29. 10
  30. 10
  31. 5
  32. 1111
  33. 220
  34. Tuesday
  35. 9876543
  36. 17
  37. 6
  38. 10
  39. 8
  40. 27

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