1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 733 · 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. 1.396 + 693 =
2. 2.792 + 297 =
3. 3.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Take 153. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Do the 1089 trick with 440: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.Take 591. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Take 840. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Take 581. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Do the 1089 trick with 824: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
11. 11.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Take 129. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Take 109. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 972. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.198 + 891 =
16. 16.Take 622. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.891 + 198 =
18. 18.693 + 396 =
19. 19.Do the 1089 trick with 429: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Take 139. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Do the 1089 trick with 620: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Do the 1089 trick with 870: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Take 173. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 914: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.495 + 594 =
26. 26.Do the 1089 trick with 891: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Do the 1089 trick with 611: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Do the 1089 trick with 186: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 882: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
31. 31.Take 330. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.297 + 792 =
33. 33.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
34. 34.Do the 1089 trick with 926: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 220. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 996: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Do the 1089 trick with 752: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
39. 39.Take 480. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 234. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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