Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 711 · 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.Double 62 =
2. 2.11111 × 11111 =
3. 3.Magic square (every row, column and diagonal has the same total): 8 29 14 | 23 17 11 | 20 ? 26. What is the missing number?
4. 4.44 × 4 =
5. 5.9 × 8 = ?2 — what is the missing digit?
6. 6.3 × 9 =
7. 7.396 + 693 =
8. 8.What comes next? 15, 17, 19, 21, ? (a) 25 (b) 23 (c) 24 (d) 21
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
10. 10.42 × 4 =
11. 11.What comes next? 3, 6, 12, 24, ? (a) 42 (b) 49 (c) 48 (d) 36
12. 12.20 × 4 =
13. 13.37 × 12 =
14. 14.Magic trick! Think of 10. Double it, add 4, halve it, then take away 10. What number do you get?
15. 15.If today is Saturday, what day will it be after 34 days? (a) Thursday (b) Saturday (c) Friday (d) Monday
16. 16.What comes next? 5, 10, 20, 40, ? (a) 81 (b) 70 (c) 60 (d) 80
17. 17.You have 8 coins. Each coin is ₹1 or ₹2, and together they make ₹9. How many ₹2 coins do you have?
18. 18.What comes next? 14, 23, 32, 41, ? (a) 59 (b) 50 (c) 41 (d) 51
19. 19.9 × 6 = ?4 — what is the missing digit?
20. 20.12345679 × 63 =
21. 21.25 × 1000 =
22. 22.A girl is 7 years old and her brother is 6 years older. How old will her brother be in 7 years?
23. 23.18 × 4 =
24. 24.What comes next? 2, 4, 8, 16, ? (a) 28 (b) 33 (c) 32 (d) 24
25. 25.12345679 × 36 =
26. 26.Take 753. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.1 + 2 + 3 + … + 41 =
28. 28.37 × 24 =
29. 29.9 × 3 =
30. 30.Magic square (every row, column and diagonal has the same total): ? 19 9 | 7 15 23 | 21 11 13. What is the missing number?
31. 31.Double 22 =
32. 32.8?50 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
33. 33.A piggy bank has 3 coins of ₹5 and 3 coins of ₹2. How many rupees are in it?
34. 34.If today is Wednesday, what day will it be after 12 days? (a) Tuesday (b) Sunday (c) Monday (d) Thursday
35. 35.1 + 2 + 3 + … + 89 =
36. 36.6 × 4 =
37. 37.Magic square (every row, column and diagonal has the same total): ? 8 22 | 20 16 12 | 10 24 14. What is the missing number?
38. 38.1 + 2 + 3 + … + 57 =
39. 39.59 × 4 =
40. 40.Half of 104 =

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