1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 907 · 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 791. 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 4. What is that number?
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
4. 4.Take 402. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.891 + 198 =
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
7. 7.Take 763. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Take 228. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Take 964. 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.Do the 1089 trick with 755: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
13. 13.Take 378. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.198 + 891 =
15. 15.693 + 396 =
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
17. 17.Take 900. Reverse its digits and take the smaller number away from the bigger one. 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.Do the 1089 trick with 179: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Do the 1089 trick with 218: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Take 179. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 946: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
24. 24.Do the 1089 trick with 700: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 940. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 306. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 550. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.396 + 693 =
29. 29.Do the 1089 trick with 780: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Do the 1089 trick with 340: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Take 924. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 754. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 320: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.297 + 792 =
35. 35.Do the 1089 trick with 840: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 691. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.594 + 495 =
38. 38.Take 487. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 992. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.792 + 297 =

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