1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 282 · 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 6. What is that number?
2. 2.198 + 891 =
3. 3.792 + 297 =
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
5. 5.Do the 1089 trick with 820: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.297 + 792 =
7. 7.Take 732. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Do the 1089 trick with 641: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.594 + 495 =
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
11. 11.693 + 396 =
12. 12.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Do the 1089 trick with 134: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Do the 1089 trick with 254: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Take 740. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Do the 1089 trick with 592: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.396 + 693 =
19. 19.Take 540. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 440. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
22. 22.Do the 1089 trick with 176: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Do the 1089 trick with 578: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Do the 1089 trick with 400: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 916. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Do the 1089 trick with 450: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Take 149. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Take 710. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Take 702. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.495 + 594 =
32. 32.Do the 1089 trick with 318: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Do the 1089 trick with 850: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Do the 1089 trick with 598: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 810. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 810: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
38. 38.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
39. 39.Take 831. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 612. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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