1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 402 · 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. 1.495 + 594 =
2. 2.891 + 198 =
3. 3.792 + 297 =
4. 4.Take 922. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.297 + 792 =
6. 6.Do the 1089 trick with 209: 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 8. What is that number?
8. 8.198 + 891 =
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
10. 10.Do the 1089 trick with 772: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
12. 12.Do the 1089 trick with 926: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Take 290. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Take 238. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
17. 17.Take 214. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 539. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 138. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.693 + 396 =
21. 21.Take 640. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Take 670. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 315. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 325: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
26. 26.Take 500. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
28. 28.Take 800. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 855: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Do the 1089 trick with 258: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Do the 1089 trick with 850: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 628. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.594 + 495 =
34. 34.Take 855. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
36. 36.Take 557. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 520. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
39. 39.Take 713. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 205. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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