Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 372 · 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 8 coins. Each coin is ₹1 or ₹2, and together they make ₹10. How many ₹2 coins do you have?
2. 2.1 + 3 + 5 + … + 9 =
3. 3.12345679 × 45 =
4. 4.1 + 2 + 3 + … + 76 =
5. 5.If today is Tuesday, what day was it 32 days ago? (a) Thursday (b) Monday (c) Saturday (d) Friday
6. 6.Double 29 =
7. 7.Double 74 =
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
9. 9.8?09 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
10. 10.Double 18 =
11. 11.Take 26 and take away the sum of its digits. What do you get?
12. 12.1 + 3 + 5 + … + 13 =
13. 13.9 × 2 = ?8 — what is the missing digit?
14. 14.785 × 10 =
15. 15.What comes next? 6, 15, 24, 33, ? (a) 43 (b) 33 (c) 42 (d) 51
16. 16.1 + 2 + 3 + … + 8 =
17. 17.I thought of a number, added 4 and then doubled it. I got 20. What was my number?
18. 18.12345679 × 27 =
19. 19.9 × 2 =
20. 20.25 × 4 =
21. 21.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
22. 22.Magic square (every row, column and diagonal has the same total): 12 5 10 | 7 9 11 | 8 ? 6. What is the missing number?
23. 23.12345678 × 8 + 8 =
24. 24.36 × 4 =
25. 25.9 × 2 = 1? — what is the missing digit?
26. 26.852 × ? = 8520
27. 27.49?2 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
28. 28.17 × 4 =
29. 29.What comes next? 1, 4, 9, 16, ? (a) 23 (b) 25 (c) 27 (d) 26
30. 30.If today is Thursday, what day was it 30 days ago? (a) Monday (b) Wednesday (c) Tuesday (d) Friday
31. 31.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
32. 32.9 × 9 =
33. 33.What comes next? 17, 20, 23, 26, ? (a) 29 (b) 26 (c) 32 (d) 30
34. 34.Half of 58 =
35. 35.Magic square (every row, column and diagonal has the same total): ? 10 17 | 16 14 12 | 11 18 13. What is the missing number?
36. 36.Think of 9. Multiply it by 5, then add 9. What number do you end with?
37. 37.If today is Saturday, what day was it 22 days ago? (a) Monday (b) Friday (c) Saturday (d) Thursday
38. 38.32 × 100 =
39. 39.14 × ? = 1400
40. 40.173 × ? = 1730

Free maths tricks lessons, practice and worksheets at talentjr.in/maths-tricks