Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 517 · 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. 1.9 × 3 = ?7 — what is the missing digit?
2. 2.Odd one out: which number is NOT in the 5 times table? (a) 14 (b) 20 (c) 35 (d) 15
3. 3.Magic square (every row, column and diagonal has the same total): 27 6 ? | 12 18 24 | 15 30 9. What is the missing number?
4. 4.What comes next? 36, 49, 64, 81, ? (a) 102 (b) 100 (c) 101 (d) 98
5. 5.If today is Sunday, what day will it be after 41 days? (a) Tuesday (b) Sunday (c) Friday (d) Saturday
6. 6.31 × 1000 =
7. 7.Magic square (every row, column and diagonal has the same total): 23 9 19 | 13 17 21 | ? 25 11. What is the missing number?
8. 8.Magic square (every row, column and diagonal has the same total): 7 ? 11 | 17 13 9 | 15 5 19. What is the missing number?
9. 9.Half of 178 =
10. 10.Magic square (every row, column and diagonal has the same total): 25 10 ? | 4 16 28 | 19 22 7. What is the missing number?
11. 11.76?3 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
12. 12.If today is Saturday, what day will it be after 29 days? (a) Wednesday (b) Sunday (c) Saturday (d) Monday
13. 13.Take 614. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.1111 × 1111 =
15. 15.42 × 4 =
16. 16.9 × 2 =
17. 17.37 × 12 =
18. 18.Think of 10. Multiply it by 2, then add 7. What number do you end with?
19. 19.Double 62 =
20. 20.Magic square (every row, column and diagonal has the same total): 21 ? 27 | 24 18 12 | 9 30 15. What is the missing number?
21. 21.If today is Wednesday, what day was it 34 days ago? (a) Friday (b) Sunday (c) Thursday (d) Wednesday
22. 22.46 × 1000 =
23. 23.Half of 28 =
24. 24.Double 12 =
25. 25.I thought of a number, added 1 and then doubled it. I got 38. What was my number?
26. 26.Take 255. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.1234 × 8 + 4 =
28. 28.9 × 2 = 1? — what is the missing digit?
29. 29.Double 93 =
30. 30.58 × 4 =
31. 31.365 × ? = 3650
32. 32.Think of 5. Multiply it by 4, then add 9. What number do you end with?
33. 33.53 × 4 =
34. 34.I thought of a number, added 9 and then doubled it. I got 32. What was my number?
35. 35.46 × ? = 46000
36. 36.You have 6 coins. Each coin is ₹1 or ₹2, and together they make ₹9. How many ₹2 coins do you have?
37. 37.6 × 9 =
38. 38.Double 24 =
39. 39.9 × 9 = ?1 — what is the missing digit?
40. 40.9 × 1000 =

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