1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 55 · 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 840. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
4. 4.Do the 1089 trick with 952: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.Do the 1089 trick with 921: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.198 + 891 =
7. 7.Do the 1089 trick with 904: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.495 + 594 =
9. 9.891 + 198 =
10. 10.Do the 1089 trick with 429: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.396 + 693 =
12. 12.Take 742. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Do the 1089 trick with 670: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
16. 16.Take 237. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.297 + 792 =
18. 18.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
19. 19.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
20. 20.Do the 1089 trick with 469: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Do the 1089 trick with 437: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Do the 1089 trick with 883: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
24. 24.Do the 1089 trick with 501: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 329. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 542. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Do the 1089 trick with 800: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Take 894. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Take 870. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Do the 1089 trick with 795: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Take 970. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 660. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 820. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 750: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Do the 1089 trick with 733: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.792 + 297 =
38. 38.594 + 495 =
39. 39.Take 560. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Do the 1089 trick with 781: reverse and subtract, then reverse that answer and add. What do you get?

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