Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 487 · 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, 5, 8, 11, ? (a) 11 (b) 15 (c) 17 (d) 14
2. 2.Magic square (every row, column and diagonal has the same total): ? 12 7 | 6 10 14 | 13 8 9. What is the missing number?
3. 3.Double 27 =
4. 4.9 × 9 = ?1 — what is the missing digit?
5. 5.If today is Wednesday, what day will it be after 12 days? (a) Tuesday (b) Sunday (c) Thursday (d) Monday
6. 6.If today is Tuesday, what day will it be after 99 days? (a) Wednesday (b) Tuesday (c) Saturday (d) Thursday
7. 7.9 × 8 = ?2 — what is the missing digit?
8. 8.13 × 100 =
9. 9.1 + 2 + 3 + … + 56 =
10. 10.Half of 186 =
11. 11.If today is Sunday, what day will it be after 51 days? (a) Tuesday (b) Monday (c) Friday (d) Wednesday
12. 12.443 × 10 =
13. 13.Magic trick! Think of 20. Double it, add 6, halve it, then take away 20. What number do you get?
14. 14.9 × 7 =
15. 15.37 × 21 =
16. 16.Double 38 =
17. 17.If today is Wednesday, what day will it be after 25 days? (a) Sunday (b) Monday (c) Saturday (d) Wednesday
18. 18.59 × 4 =
19. 19.1 + 2 + 3 + … + 60 =
20. 20.Magic trick! Think of 17. Double it, add 14, halve it, then take away 17. What number do you get?
21. 21.What comes next? 25, 36, 49, 64, ? (a) 79 (b) 83 (c) 81 (d) 82
22. 22.1 + 2 + 3 + … + 45 =
23. 23.53 × 4 =
24. 24.Take 31 and take away the sum of its digits. What do you get?
25. 25.9 × 1 =
26. 26.1 + 2 + 3 + … + 66 =
27. 27.A girl is 9 years old and her brother is 6 years older. How old will her brother be in 4 years?
28. 28.27 × 100 =
29. 29.9 × 4 =
30. 30.I thought of a number, multiplied it by 2 and added 4. I got 16. What was my number?
31. 31.You have 15 coins. Each coin is ₹1 or ₹2, and together they make ₹28. How many ₹2 coins do you have?
32. 32.9 × 7 = ?3 — what is the missing digit?
33. 33.9 × 7 = 6? — what is the missing digit?
34. 34.36 × 1000 =
35. 35.What comes next? 4, 9, 16, 25, ? (a) 38 (b) 36 (c) 34 (d) 37
36. 36.9 × 2 =
37. 37.5 × ? = 5000
38. 38.12345679 × 72 =
39. 39.35 × 4 =
40. 40.The ages of two twins add up to 24. How old is each twin?

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