1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 623 · 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. 1.693 + 396 =
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
3. 3.594 + 495 =
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
5. 5.Take 508. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Do the 1089 trick with 502: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Take 603. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Do the 1089 trick with 277: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.Take 833. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Take 195. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Take 164. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Do the 1089 trick with 135: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Take 286. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Take 944. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Do the 1089 trick with 932: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Do the 1089 trick with 749: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Take 751. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Do the 1089 trick with 351: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.396 + 693 =
22. 22.Take 951. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.198 + 891 =
24. 24.Take 385. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.297 + 792 =
26. 26.792 + 297 =
27. 27.Take 236. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 841: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
30. 30.Do the 1089 trick with 985: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
32. 32.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
34. 34.Take 994. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 650. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 319. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.891 + 198 =
38. 38.Take 805. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 952: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 955. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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