1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 337 · 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.Take 589. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.891 + 198 =
3. 3.Take 522. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.495 + 594 =
5. 5.Take 805. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Do the 1089 trick with 550: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
11. 11.594 + 495 =
12. 12.396 + 693 =
13. 13.Do the 1089 trick with 672: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
15. 15.Take 954. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Take 951. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 159. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 446. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 735. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 970. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.198 + 891 =
22. 22.Do the 1089 trick with 922: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.297 + 792 =
24. 24.Take 365. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 815. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.792 + 297 =
27. 27.Do the 1089 trick with 108: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Do the 1089 trick with 730: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Take 307. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Do the 1089 trick with 815: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
34. 34.Do the 1089 trick with 348: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 933: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 217. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 679: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 711. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 971: reverse and subtract, then reverse that answer and add. What do you get?

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