1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 732 · 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. 1.693 + 396 =
2. 2.Take 854. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
4. 4.Take 630. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Do the 1089 trick with 269: 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 1. What is that number?
7. 7.495 + 594 =
8. 8.792 + 297 =
9. 9.Do the 1089 trick with 913: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.891 + 198 =
11. 11.Take 247. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Do the 1089 trick with 208: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
14. 14.396 + 693 =
15. 15.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
16. 16.Do the 1089 trick with 990: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
18. 18.Take 971. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Do the 1089 trick with 159: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Take 802. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 820. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Take 199. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Do the 1089 trick with 904: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.297 + 792 =
25. 25.Take 470. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 286. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Do the 1089 trick with 477: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Take 108. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.594 + 495 =
30. 30.Do the 1089 trick with 449: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.198 + 891 =
32. 32.Do the 1089 trick with 541: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 940. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 512: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 970: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
37. 37.Do the 1089 trick with 147: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 379. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 510: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 296. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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