Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 760 · 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. 1.11111 × 11111 =
2. 2.4 × 9 =
3. 3.44 × 1000 =
4. 4.9 × 5 = ?5 — what is the missing digit?
5. 5.You have 8 coins. Each coin is ₹1 or ₹2, and together they make ₹12. How many ₹2 coins do you have?
6. 6.Half of 76 =
7. 7.36 × ? = 3600
8. 8.Magic square (every row, column and diagonal has the same total): 13 6 11 | 8 10 12 | ? 14 7. What is the missing number?
9. 9.Magic square (every row, column and diagonal has the same total): 27 12 15 | 6 ? 30 | 21 24 9. What is the missing number?
10. 10.If today is Sunday, what day will it be after 97 days? (a) Saturday (b) Tuesday (c) Sunday (d) Friday
11. 11.Odd one out: which number is NOT in the 7 times table? (a) 28 (b) 21 (c) 35 (d) 68
12. 12.9 × 4 = ?6 — what is the missing digit?
13. 13.Magic square (every row, column and diagonal has the same total): 7 ? 9 | 8 6 4 | 3 10 5. What is the missing number?
14. 14.Do the 1089 trick with 430: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.The 3rd of a month is a Monday. What day is the 27th of the same month? (a) Friday (b) Sunday (c) Wednesday (d) Thursday
16. 16.9 × 1000 =
17. 17.Odd one out: which number is NOT in the 9 times table? (a) 36 (b) 45 (c) 31 (d) 27
18. 18.12 × 1000 =
19. 19.What comes next? 5, 10, 20, 40, ? (a) 60 (b) 81 (c) 80 (d) 70
20. 20.Magic square (every row, column and diagonal has the same total): 10 ? 14 | 20 16 12 | 18 8 22. What is the missing number?
21. 21.10 × 1000 =
22. 22.Do the 1089 trick with 961: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.What comes next? 2, 4, 8, 16, ? (a) 28 (b) 33 (c) 32 (d) 24
24. 24.Do the 1089 trick with 214: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Magic square (every row, column and diagonal has the same total): 12 17 ? | 11 13 15 | 16 9 14. What is the missing number?
26. 26.1 + 3 + 5 + … + 17 =
27. 27.12345 × 9 + 6 =
28. 28.41 × 4 =
29. 29.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
30. 30.12345679 × 81 =
31. 31.Magic trick! Think of 20. Double it, add 8, halve it, then take away 20. What number do you get?
32. 32.A father is 42 years old and his son is 11. How old was the father when the son was born?
33. 33.9 × 3 = ?7 — what is the missing digit?
34. 34.1 + 2 + 3 + … + 27 =
35. 35.The ages of two twins add up to 20. How old is each twin?
36. 36.11 × 11 =
37. 37.Magic square (every row, column and diagonal has the same total): 18 8 22 | 20 16 ? | 10 24 14. What is the missing number?
38. 38.What comes next? 4, 6, 8, 10, ? (a) 12 (b) 10 (c) 14 (d) 13
39. 39.If today is Sunday, what day will it be after 100 days? (a) Friday (b) Monday (c) Wednesday (d) Tuesday
40. 40.9 × 2 = ?8 — what is the missing digit?

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