1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 783 · 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. 1.693 + 396 =
2. 2.Do the 1089 trick with 420: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.Take 855. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Take 662. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Do the 1089 trick with 380: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.297 + 792 =
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
8. 8.Take 610. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
10. 10.Take 234. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Take 359. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Take 649. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Do the 1089 trick with 321: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Do the 1089 trick with 906: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Take 440. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.198 + 891 =
17. 17.Take 850. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Do the 1089 trick with 136: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Do the 1089 trick with 590: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Take 622. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Do the 1089 trick with 876: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.594 + 495 =
23. 23.Take 760. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 276. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 946. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
27. 27.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
28. 28.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
29. 29.Do the 1089 trick with 591: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 187. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Do the 1089 trick with 744: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 381. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 810. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 167. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.891 + 198 =
36. 36.Take 740. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 169. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 229: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 730: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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