1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 90 · 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 7. What is that number?
2. 2.Do the 1089 trick with 975: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.495 + 594 =
4. 4.Do the 1089 trick with 563: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.Take 407. Reverse its digits and take the smaller number away from the bigger one. 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.Take 623. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Take 179. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Take 327. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.297 + 792 =
11. 11.Take 432. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.594 + 495 =
13. 13.Take 590. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 309. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.396 + 693 =
16. 16.Do the 1089 trick with 149: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Do the 1089 trick with 601: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
19. 19.Take 663. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Do the 1089 trick with 502: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Do the 1089 trick with 931: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Do the 1089 trick with 930: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Take 553. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 579. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 157: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
27. 27.Do the 1089 trick with 377: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.693 + 396 =
29. 29.Take 720. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Take 743. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Do the 1089 trick with 740: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 701. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 870: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Do the 1089 trick with 380: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
36. 36.Take 620. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 917. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 410: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 977. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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