1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 97 · 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. 1.495 + 594 =
2. 2.Do the 1089 trick with 361: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.297 + 792 =
4. 4.Take 841. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.594 + 495 =
6. 6.198 + 891 =
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
8. 8.Take 954. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Do the 1089 trick with 723: reverse and subtract, then reverse that answer and add. 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 452: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Take 850. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Do the 1089 trick with 351: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Take 612. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.792 + 297 =
17. 17.Take 306. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 820. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
20. 20.Take 749. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Do the 1089 trick with 265: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.396 + 693 =
23. 23.Do the 1089 trick with 602: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
25. 25.Take 407. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 570. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 976. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 179: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Take 220. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Do the 1089 trick with 922: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 208. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 459. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 692: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 912. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 239. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 400. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 600. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 580: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 613: reverse and subtract, then reverse that answer and add. What do you get?

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