1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 982 · 40 questions

The trick (Reverse and subtract): Reverse the number and take the smaller number away from the bigger one. The answer is always one of 198, 297, 396, 495, 594, 693, 792, 891: middle digit 9, first and last digits adding to 9. Reverse that answer and add: you always get 1089.

1. 1.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
2. 2.Do the 1089 trick with 219: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
4. 4.Do the 1089 trick with 852: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.Do the 1089 trick with 137: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.Do the 1089 trick with 983: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
8. 8.Take 740. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Take 884. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Do the 1089 trick with 471: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Take 915. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.198 + 891 =
13. 13.693 + 396 =
14. 14.Take 610. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Take 800. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Take 431. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 971. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.396 + 693 =
19. 19.Take 872. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
21. 21.Take 931. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 244: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.495 + 594 =
24. 24.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
25. 25.Take 632. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 802: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Do the 1089 trick with 680: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.891 + 198 =
29. 29.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
30. 30.Do the 1089 trick with 156: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 614. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 754: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Do the 1089 trick with 447: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 740: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 599. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 280: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Take 622. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 805. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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