Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 650 · 40 questions

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.

1. 1.You have 5 coins. Each coin is ₹1 or ₹2, and together they make ₹7. How many ₹2 coins do you have?
2. 2.Magic square (every row, column and diagonal has the same total): 2 9 4 | 7 ? 3 | 6 1 8. What is the missing number?
3. 3.If today is Saturday, what day was it 37 days ago? (a) Sunday (b) Wednesday (c) Thursday (d) Friday
4. 4.13 × 1000 =
5. 5.9 × 8 = 7? — what is the missing digit?
6. 6.7?38 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
7. 7.3 × 9 =
8. 8.11 × 4 =
9. 9.4 × 9 =
10. 10.The 3rd of a month is a Tuesday. What day is the 19th of the same month? (a) Thursday (b) Friday (c) Wednesday (d) Sunday
11. 11.You have 7 coins. Each coin is ₹1 or ₹2, and together they make ₹9. How many ₹2 coins do you have?
12. 12.A piggy bank has 5 coins of ₹5 and 14 coins of ₹2. How many rupees are in it?
13. 13.Magic square (every row, column and diagonal has the same total): 19 22 7 | 4 16 28 | 25 10 ?. What is the missing number?
14. 14.27 × ? = 2700
15. 15.65?2 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
16. 16.37 × 4 =
17. 17.9 × 5 = 4? — what is the missing digit?
18. 18.A father is 32 years old and his son is 6. How old was the father when the son was born?
19. 19.558 × 10 =
20. 20.A girl is 5 years old and her brother is 5 years older. How old will her brother be in 2 years?
21. 21.9 × 9 = ?1 — what is the missing digit?
22. 22.What comes next? 10, 14, 18, 22, ? (a) 27 (b) 26 (c) 22 (d) 30
23. 23.12345679 × 18 =
24. 24.9 × 5 =
25. 25.468 × 10 =
26. 26.56 × 4 =
27. 27.What comes next? 4, 6, 8, 10, ? (a) 12 (b) 10 (c) 14 (d) 13
28. 28.Double 87 =
29. 29.Half of 128 =
30. 30.Half of 54 =
31. 31.90 × 100 =
32. 32.12345679 × 9 =
33. 33.37 × 21 =
34. 34.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
35. 35.I thought of a number, added 3 and then doubled it. I got 30. What was my number?
36. 36.73?0 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
37. 37.9 × 7 =
38. 38.Take 85 and take away the sum of its digits. What do you get?
39. 39.12345679 × 27 =
40. 40.168 × 10 =

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