Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 471 · 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.What comes next? 2, 4, 8, 16, ? (a) 24 (b) 33 (c) 32 (d) 28
2. 2.Do the 1089 trick with 220: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.A piggy bank has 9 coins of ₹5 and 2 coins of ₹2. How many rupees are in it?
4. 4.59 × 4 =
5. 5.36 × 1000 =
6. 6.9 × 4 = 3? — what is the missing digit?
7. 7.Double 27 =
8. 8.5?29 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
9. 9.The 9th of a month is a Friday. What day is the 17th of the same month? (a) Saturday (b) Friday (c) Sunday (d) Tuesday
10. 10.57 × 4 =
11. 11.If today is Tuesday, what day will it be after 51 days? (a) Friday (b) Wednesday (c) Sunday (d) Thursday
12. 12.1 × 9 =
13. 13.1 + 3 + 5 + … + 41 =
14. 14.9 × 9 = ?1 — what is the missing digit?
15. 15.33 × 4 =
16. 16.12345 × 8 + 5 =
17. 17.37 × 12 =
18. 18.9 × 4 = ?6 — what is the missing digit?
19. 19.111 × 111 =
20. 20.28 × 4 =
21. 21.Half of 142 =
22. 22.If today is Monday, what day was it 48 days ago? (a) Tuesday (b) Monday (c) Friday (d) Wednesday
23. 23.Take 460. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Magic square (every row, column and diagonal has the same total): 13 34 19 | 28 22 ? | 25 10 31. What is the missing number?
25. 25.35 × 4 =
26. 26.The 9th of a month is a Saturday. What day is the 22nd of the same month? (a) Saturday (b) Thursday (c) Friday (d) Monday
27. 27.1 + 2 + 3 + … + 8 =
28. 28.4?40 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
29. 29.Odd one out: which number is NOT in the 4 times table? (a) 16 (b) 20 (c) 38 (d) 32
30. 30.Double 74 =
31. 31.4 × 9 =
32. 32.1 + 2 + 3 + … + 15 =
33. 33.Odd one out: which number is NOT in the 8 times table? (a) 41 (b) 56 (c) 48 (d) 32
34. 34.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
35. 35.Magic trick! Think of 10. Double it, add 16, halve it, then take away 10. What number do you get?
36. 36.Half of 132 =
37. 37.The 6th of a month is a Saturday. What day is the 15th of the same month? (a) Monday (b) Sunday (c) Thursday (d) Tuesday
38. 38.You have 14 coins. Each coin is ₹1 or ₹2, and together they make ₹22. How many ₹2 coins do you have?
39. 39.?463 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
40. 40.41 × 4 =

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