1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 576 · 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.Take 890. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
4. 4.Take 420. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.792 + 297 =
6. 6.Do the 1089 trick with 911: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
8. 8.Do the 1089 trick with 775: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.594 + 495 =
10. 10.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Do the 1089 trick with 753: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.693 + 396 =
13. 13.Do the 1089 trick with 860: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Take 704. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Take 319. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Do the 1089 trick with 238: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
19. 19.Take 176. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 347. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 104. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
23. 23.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
24. 24.Do the 1089 trick with 366: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 690. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
27. 27.396 + 693 =
28. 28.Take 469. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Take 239. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Do the 1089 trick with 790: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Do the 1089 trick with 915: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 155. 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 2. What is that number?
35. 35.Do the 1089 trick with 552: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.891 + 198 =
37. 37.Take 860. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 803: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 729: reverse and subtract, then reverse that answer and add. What do you get?

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