1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 243 · 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.Take 956. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.Take 660. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.396 + 693 =
5. 5.Do the 1089 trick with 800: 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 6. What is that number?
7. 7.Take 114. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.594 + 495 =
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
10. 10.Take 860. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Take 729. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Take 723. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Do the 1089 trick with 550: 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 7. What is that number?
15. 15.Take 426. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Take 440. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
18. 18.Do the 1089 trick with 650: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.297 + 792 =
20. 20.Take 491. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 523. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 419: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.792 + 297 =
24. 24.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.693 + 396 =
26. 26.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
27. 27.Do the 1089 trick with 850: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 553: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.495 + 594 =
31. 31.Do the 1089 trick with 810: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 357. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.198 + 891 =
34. 34.Do the 1089 trick with 890: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 977: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Do the 1089 trick with 210: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Do the 1089 trick with 386: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 501: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 873: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 721. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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