1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 924 · 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. 2.891 + 198 =
3. 3.Take 886. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Do the 1089 trick with 560: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
6. 6.Do the 1089 trick with 184: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Take 801. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.693 + 396 =
9. 9.Do the 1089 trick with 892: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.Do the 1089 trick with 116: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Take 734. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
13. 13.594 + 495 =
14. 14.495 + 594 =
15. 15.Take 229. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.297 + 792 =
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
18. 18.Do the 1089 trick with 853: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 904. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 276. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 429. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Take 990. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 644. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 308. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 932: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Do the 1089 trick with 883: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 114. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 230: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 105: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 540. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 550. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 408. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 418. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
35. 35.Take 179. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 329. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 530: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 391. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.198 + 891 =
40. 40.Take 923. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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