1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 632 · 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.Do the 1089 trick with 684: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.891 + 198 =
3. 3.Do the 1089 trick with 275: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.198 + 891 =
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
6. 6.Do the 1089 trick with 986: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Do the 1089 trick with 933: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Take 831. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Take 395. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
11. 11.Do the 1089 trick with 611: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Take 966. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
14. 14.495 + 594 =
15. 15.Take 254. 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 5. What is that number?
17. 17.792 + 297 =
18. 18.Take 421. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Do the 1089 trick with 442: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
21. 21.Do the 1089 trick with 846: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 166. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 109: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.297 + 792 =
26. 26.Take 216. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. 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.Take 630. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.693 + 396 =
31. 31.Do the 1089 trick with 430: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Do the 1089 trick with 259: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 921. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
35. 35.Take 431. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 540: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Do the 1089 trick with 194: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 759. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 371: reverse and subtract, then reverse that answer and add. What do you get?

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