1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 588 · 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 3. What is that number?
2. 2.693 + 396 =
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
4. 4.Take 126. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.891 + 198 =
6. 6.Do the 1089 trick with 701: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Do the 1089 trick with 390: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
10. 10.Take 990. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Take 367. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Take 349. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 723. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.594 + 495 =
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
17. 17.Do the 1089 trick with 431: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Take 459. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Do the 1089 trick with 523: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Take 600. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.297 + 792 =
22. 22.Do the 1089 trick with 401: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.198 + 891 =
24. 24.Take 370. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 570. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 703. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 862. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
31. 31.Do the 1089 trick with 710: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
33. 33.Take 954. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 831. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 442: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.792 + 297 =
37. 37.495 + 594 =
38. 38.Take 183. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
40. 40.Do the 1089 trick with 880: reverse and subtract, then reverse that answer and add. What do you get?

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