1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 22 · 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.Take 265. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
3. 3.495 + 594 =
4. 4.Take 721. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Do the 1089 trick with 925: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.Take 178. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Do the 1089 trick with 589: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Do the 1089 trick with 194: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Take 993. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Take 138. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
12. 12.Do the 1089 trick with 862: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Do the 1089 trick with 330: 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 2. What is that number?
15. 15.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Do the 1089 trick with 149: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Take 440. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 198. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.297 + 792 =
20. 20.Take 805. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.693 + 396 =
22. 22.Do the 1089 trick with 990: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.891 + 198 =
24. 24.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
26. 26.Take 520. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 518. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 940. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 230: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Do the 1089 trick with 700: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.198 + 891 =
32. 32.Do the 1089 trick with 630: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Do the 1089 trick with 431: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 156. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
37. 37.Do the 1089 trick with 704: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 437: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?

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