1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 322 · 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. 2.891 + 198 =
3. 3.495 + 594 =
4. 4.Take 149. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
7. 7.Do the 1089 trick with 129: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Take 720. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Do the 1089 trick with 600: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.297 + 792 =
11. 11.693 + 396 =
12. 12.Take 175. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Do the 1089 trick with 325: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Do the 1089 trick with 744: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Do the 1089 trick with 990: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Do the 1089 trick with 341: 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 7. What is that number?
19. 19.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
20. 20.Do the 1089 trick with 962: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Do the 1089 trick with 360: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Do the 1089 trick with 608: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
24. 24.594 + 495 =
25. 25.Do the 1089 trick with 630: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 387. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 970. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Take 917. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Take 279. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
32. 32.Take 860. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 329. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 670: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 893: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 684. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 470: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 764. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 931. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Do the 1089 trick with 634: reverse and subtract, then reverse that answer and add. What do you get?

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