1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 52 · 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.Do the 1089 trick with 245: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.Take 472. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.Take 503. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
5. 5.495 + 594 =
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
7. 7.Take 963. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.891 + 198 =
9. 9.Take 349. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
11. 11.297 + 792 =
12. 12.Take 500. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Take 890. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Do the 1089 trick with 800: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Do the 1089 trick with 236: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Take 279. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 350. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 881. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Take 146. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.792 + 297 =
22. 22.Do the 1089 trick with 531: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Do the 1089 trick with 553: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
25. 25.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 470. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 903. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 472: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.594 + 495 =
30. 30.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
31. 31.Take 976. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
34. 34.Do the 1089 trick with 850: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 820: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Do the 1089 trick with 326: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
38. 38.Do the 1089 trick with 860: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Take 981. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Do the 1089 trick with 600: reverse and subtract, then reverse that answer and add. What do you get?

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