1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 634 · 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 4. What is that number?
2. 2.Take 128. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.198 + 891 =
4. 4.Do the 1089 trick with 600: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.Do the 1089 trick with 116: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
7. 7.792 + 297 =
8. 8.Take 963. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Do the 1089 trick with 640: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.594 + 495 =
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
12. 12.495 + 594 =
13. 13.Do the 1089 trick with 196: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Do the 1089 trick with 156: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Take 881. 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 7. What is that number?
17. 17.Take 532. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 970. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
20. 20.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
21. 21.Take 560. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
23. 23.891 + 198 =
24. 24.Take 703. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.297 + 792 =
26. 26.Take 320. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 610. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 310: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Take 225. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Take 194. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Do the 1089 trick with 940: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.396 + 693 =
33. 33.Do the 1089 trick with 710: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 580. 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 6. What is that number?
36. 36.Do the 1089 trick with 508: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 563: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 991: reverse and subtract, then reverse that answer and add. What do you get?

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