Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 859 · 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. 1.18 × 4 =
2. 2.Half of 122 =
3. 3.Do the 1089 trick with 855: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.12 × 1000 =
5. 5.I thought of a number, multiplied it by 3 and added 3. I got 45. What was my number?
6. 6.993 × 10 =
7. 7.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.In 3 years a boy will be 13 years old. How old was he 5 years ago?
9. 9.12 × 8 + 2 =
10. 10.Take 93 and take away the sum of its digits. What do you get?
11. 11.83?4 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
12. 12.Double 59 =
13. 13.1 + 2 + 3 + … + 49 =
14. 14.1 × 9 =
15. 15.What comes next? 36, 49, 64, 81, ? (a) 101 (b) 102 (c) 100 (d) 98
16. 16.Magic square (every row, column and diagonal has the same total): 13 23 9 | ? 15 19 | 21 7 17. What is the missing number?
17. 17.If today is Monday, what day will it be after 23 days? (a) Saturday (b) Thursday (c) Wednesday (d) Tuesday
18. 18.17 × 1000 =
19. 19.Magic trick! Think of 13. Double it, add 18, halve it, then take away 13. What number do you get?
20. 20.45 × ? = 45000
21. 21.15 × 4 =
22. 22.Magic square (every row, column and diagonal has the same total): 12 27 ? | 9 15 21 | 24 3 18. What is the missing number?
23. 23.The 8th of a month is a Monday. What day is the 30th of the same month? (a) Friday (b) Monday (c) Tuesday (d) Wednesday
24. 24.1 + 3 + 5 + … + 41 =
25. 25.34 × 4 =
26. 26.221 × 10 =
27. 27.27 × 4 =
28. 28.9 × 9 =
29. 29.40 × 1000 =
30. 30.Think of 15. Multiply it by 2, then add 8. What number do you end with?
31. 31.8 × 9 =
32. 32.57 × ? = 5700
33. 33.16 × 4 =
34. 34.938 × 10 =
35. 35.Take 28 and take away the sum of its digits. What do you get?
36. 36.38 × 4 =
37. 37.9 × 4 = 3? — what is the missing digit?
38. 38.1 + 2 + 3 + … + 91 =
39. 39.9 × 2 = ?8 — what is the missing digit?
40. 40.9 × 2 = 1? — what is the missing digit?

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