1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 884 · 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. 1.891 + 198 =
2. 2.495 + 594 =
3. 3.Take 477. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Take 258. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
6. 6.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Do the 1089 trick with 670: 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 5. What is that number?
9. 9.Take 522. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Take 880. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.297 + 792 =
13. 13.792 + 297 =
14. 14.396 + 693 =
15. 15.Do the 1089 trick with 921: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Take 183. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 220. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.693 + 396 =
19. 19.Take 701. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 770. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Do the 1089 trick with 730: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Take 800. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 385. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 810: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.594 + 495 =
26. 26.Do the 1089 trick with 499: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Do the 1089 trick with 147: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
29. 29.Do the 1089 trick with 597: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 860. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 671. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
33. 33.198 + 891 =
34. 34.Take 783. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
37. 37.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
39. 39.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 239: reverse and subtract, then reverse that answer and add. What do you get?

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