1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 249 · 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 2. What is that number?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
3. 3.Do the 1089 trick with 940: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
6. 6.Take 416. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Do the 1089 trick with 751: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.495 + 594 =
9. 9.Do the 1089 trick with 256: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.Take 104. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Take 417. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.693 + 396 =
13. 13.Take 470. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
15. 15.Do the 1089 trick with 462: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Do the 1089 trick with 661: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.297 + 792 =
18. 18.Do the 1089 trick with 317: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 773. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 421. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 710. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Take 795. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.594 + 495 =
24. 24.Take 320. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 840. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.891 + 198 =
27. 27.Take 165. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 860: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 800: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Do the 1089 trick with 903: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Take 731. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.792 + 297 =
33. 33.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
34. 34.Take 561. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 126: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 224. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 700. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 633: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 793. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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