Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 506 · 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. 1.32 × 4 =
2. 2.1 + 3 + 5 + … + 21 =
3. 3.896? is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
4. 4.1 + 2 + 3 + … + 19 =
5. 5.In 6 years a boy will be 17 years old. How old was he 7 years ago?
6. 6.Magic square (every row, column and diagonal has the same total): 13 15 5 | 3 11 19 | ? 7 9. What is the missing number?
7. 7.1 + 2 + 3 + … + 50 =
8. 8.12345679 × 72 =
9. 9.9 × 100 =
10. 10.96 × 100 =
11. 11.889? is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
12. 12.56 × 4 =
13. 13.9 × 6 = ?4 — what is the missing digit?
14. 14.Take 309. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Half of 82 =
16. 16.Magic square (every row, column and diagonal has the same total): ? 15 18 | 9 21 33 | 24 27 12. What is the missing number?
17. 17.Take 76 and take away the sum of its digits. What do you get?
18. 18.Odd one out: which number is NOT in the 9 times table? (a) 27 (b) 54 (c) 81 (d) 68
19. 19.9 × 2 = ?8 — what is the missing digit?
20. 20.4 × 9 =
21. 21.1 + 2 + 3 + … + 9 =
22. 22.12345679 × 9 =
23. 23.9 × 10 = ?0 — what is the missing digit?
24. 24.Magic square (every row, column and diagonal has the same total): 10 20 6 | 8 12 16 | 18 4 ?. What is the missing number?
25. 25.Do the 1089 trick with 895: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Take 11 and take away the sum of its digits. What do you get?
27. 27.Magic square (every row, column and diagonal has the same total): 11 10 15 | 16 12 8 | 9 14 ?. What is the missing number?
28. 28.Magic square (every row, column and diagonal has the same total): ? 5 10 | 11 7 3 | 4 9 8. What is the missing number?
29. 29.253 × ? = 2530
30. 30.Magic square (every row, column and diagonal has the same total): ? 7 14 | 13 11 9 | 8 15 10. What is the missing number?
31. 31.I thought of a number, multiplied it by 2 and added 4. I got 14. What was my number?
32. 32.Magic trick! Think of 2. Double it, add 18, halve it, then take away 2. What number do you get?
33. 33.If today is Sunday, what day will it be after 58 days? (a) Friday (b) Wednesday (c) Tuesday (d) Monday
34. 34.9 × 1 =
35. 35.Take 284. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Magic square (every row, column and diagonal has the same total): 33 ? 27 | 18 24 30 | 21 36 15. What is the missing number?
37. 37.I thought of a number, multiplied it by 2 and added 4. I got 12. What was my number?
38. 38.Odd one out: which number is NOT in the 9 times table? (a) 27 (b) 21 (c) 18 (d) 36
39. 39.If today is Friday, what day was it 31 days ago? (a) Wednesday (b) Friday (c) Tuesday (d) Monday
40. 40.Do the 1089 trick with 610: reverse and subtract, then reverse that answer and add. What do you get?

Free maths tricks lessons, practice and worksheets at talentjr.in/maths-tricks