1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 862 · 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.Take 307. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.Do the 1089 trick with 229: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.Take 476. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Take 880. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Do the 1089 trick with 220: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
8. 8.891 + 198 =
9. 9.198 + 891 =
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
11. 11.Do the 1089 trick with 800: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
13. 13.Do the 1089 trick with 429: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Do the 1089 trick with 266: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Do the 1089 trick with 830: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Take 224. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.693 + 396 =
19. 19.297 + 792 =
20. 20.Take 370. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Do the 1089 trick with 613: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Take 560. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Do the 1089 trick with 118: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Take 943. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
26. 26.Take 730. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 500. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 614: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 361. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Do the 1089 trick with 890: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 239. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 456. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 548. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 502: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 418. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 762: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 990: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
40. 40.Take 792. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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