1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 401 · 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.Do the 1089 trick with 228: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.Take 269. 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 1. What is that number?
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
6. 6.297 + 792 =
7. 7.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.396 + 693 =
9. 9.792 + 297 =
10. 10.Take 328. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
12. 12.Take 925. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Do the 1089 trick with 830: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Do the 1089 trick with 930: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.198 + 891 =
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
17. 17.Take 901. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Do the 1089 trick with 924: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Do the 1089 trick with 385: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
21. 21.594 + 495 =
22. 22.Do the 1089 trick with 780: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Do the 1089 trick with 571: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Take 619. Reverse its digits and take the smaller number away from the bigger one. 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.Do the 1089 trick with 361: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.693 + 396 =
28. 28.891 + 198 =
29. 29.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
30. 30.Do the 1089 trick with 824: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.495 + 594 =
32. 32.Do the 1089 trick with 167: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 983. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 560. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 118: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Do the 1089 trick with 856: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 270. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 508: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 870. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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