1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 776 · 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 3. What is that number?
2. 2.Do the 1089 trick with 841: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.693 + 396 =
4. 4.198 + 891 =
5. 5.396 + 693 =
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
8. 8.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
10. 10.891 + 198 =
11. 11.Take 893. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Do the 1089 trick with 229: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Take 820. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Do the 1089 trick with 775: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Do the 1089 trick with 990: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Do the 1089 trick with 810: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Take 940. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Do the 1089 trick with 653: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Do the 1089 trick with 325: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Do the 1089 trick with 762: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
22. 22.Take 187. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 890. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 407. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 855: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Do the 1089 trick with 571: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 995. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 760. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 590: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 740. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Do the 1089 trick with 870: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Do the 1089 trick with 309: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 601. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.297 + 792 =
35. 35.Take 310. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 800: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 529. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 523: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Take 260. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Do the 1089 trick with 790: reverse and subtract, then reverse that answer and add. What do you get?

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