1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 519 · 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 296. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.792 + 297 =
3. 3.891 + 198 =
4. 4.Do the 1089 trick with 600: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.Take 915. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Do the 1089 trick with 852: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Take 835. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Do the 1089 trick with 940: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.594 + 495 =
10. 10.Do the 1089 trick with 553: 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 4. What is that number?
12. 12.Do the 1089 trick with 149: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Take 811. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Do the 1089 trick with 325: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Take 196. 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. 17.693 + 396 =
18. 18.Take 259. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Do the 1089 trick with 850: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Do the 1089 trick with 951: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.495 + 594 =
22. 22.Take 872. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Do the 1089 trick with 126: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.297 + 792 =
25. 25.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.396 + 693 =
27. 27.Do the 1089 trick with 530: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Take 981. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
31. 31.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
32. 32.Do the 1089 trick with 892: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 961. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 924. 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 3. What is that number?
36. 36.Do the 1089 trick with 330: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 256. 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 7. What is that number?
39. 39.Take 371. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 179. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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