1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 219 · 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.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
2. 2.693 + 396 =
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
4. 4.396 + 693 =
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
7. 7.Do the 1089 trick with 590: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Take 630. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.792 + 297 =
10. 10.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Take 870. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Take 419. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Do the 1089 trick with 923: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Take 658. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.495 + 594 =
16. 16.891 + 198 =
17. 17.198 + 891 =
18. 18.Take 360. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Do the 1089 trick with 901: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Do the 1089 trick with 816: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Do the 1089 trick with 937: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Do the 1089 trick with 108: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Take 471. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 981. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 154: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Do the 1089 trick with 974: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Do the 1089 trick with 981: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 204: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 230. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
32. 32.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
33. 33.Do the 1089 trick with 345: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Do the 1089 trick with 173: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.594 + 495 =
36. 36.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 811. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 295. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 489: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 250: reverse and subtract, then reverse that answer and add. What do you get?

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