Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 260 · 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.Half of 108 =
2. 2.A piggy bank has 9 coins of ₹5 and 15 coins of ₹2. How many rupees are in it?
3. 3.The 3rd of a month is a Friday. What day is the 13th of the same month? (a) Thursday (b) Sunday (c) Tuesday (d) Monday
4. 4.Take 492. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.A piggy bank has 3 coins of ₹5 and 11 coins of ₹2. How many rupees are in it?
6. 6.12345 × 8 + 5 =
7. 7.8 × 9 =
8. 8.Magic square (every row, column and diagonal has the same total): ? 4 18 | 16 12 8 | 6 20 10. What is the missing number?
9. 9.37 × 24 =
10. 10.37 × 12 =
11. 11.9 × 5 =
12. 12.Do the 1089 trick with 893: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Odd one out: which number is NOT in the 5 times table? (a) 12 (b) 20 (c) 10 (d) 25
14. 14.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
15. 15.9 × 6 =
16. 16.1 + 3 + 5 + … + 41 =
17. 17.139? is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
18. 18.28 × 4 =
19. 19.594 + 495 =
20. 20.Magic square (every row, column and diagonal has the same total): 26 11 32 | 29 23 ? | 14 35 20. What is the missing number?
21. 21.Think of 14. Multiply it by 5, then add 8. What number do you end with?
22. 22.12345679 × 45 =
23. 23.1111 × 1111 =
24. 24.Magic trick! Think of 15. Double it, add 8, halve it, then take away 15. What number do you get?
25. 25.I thought of a number, added 7 and then doubled it. I got 52. What was my number?
26. 26.9 × 1 =
27. 27.What comes next? 10, 15, 20, 25, ? (a) 25 (b) 31 (c) 35 (d) 30
28. 28.Take 118. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.4?94 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
30. 30.I thought of a number, added 7 and then doubled it. I got 44. What was my number?
31. 31.Magic square (every row, column and diagonal has the same total): 9 30 15 | 24 18 12 | 21 ? 27. What is the missing number?
32. 32.Take 137. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.The ages of two twins add up to 20. How old is each twin?
34. 34.The 7th of a month is a Sunday. What day is the 29th of the same month? (a) Monday (b) Thursday (c) Tuesday (d) Sunday
35. 35.Magic square (every row, column and diagonal has the same total): 23 26 11 | 8 20 32 | ? 14 17. What is the missing number?
36. 36.497? is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
37. 37.9 × 9 =
38. 38.9 × 6 = ?4 — what is the missing digit?
39. 39.You have 14 coins. Each coin is ₹1 or ₹2, and together they make ₹25. How many ₹2 coins do you have?
40. 40.Think of 3. Multiply it by 3, then add 1. What number do you end with?

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