1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 236 · 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 7. What is that number?
2. 2.Take 955. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.Take 309. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Do the 1089 trick with 990: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.792 + 297 =
6. 6.Take 875. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
8. 8.495 + 594 =
9. 9.Do the 1089 trick with 691: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.594 + 495 =
11. 11.Take 780. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Do the 1089 trick with 930: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Do the 1089 trick with 532: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Take 901. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
16. 16.Do the 1089 trick with 288: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
18. 18.Do the 1089 trick with 904: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
20. 20.Take 249. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.297 + 792 =
22. 22.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
23. 23.Do the 1089 trick with 279: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Take 763. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 931. 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 4. What is that number?
27. 27.Take 902. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 300. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.693 + 396 =
30. 30.Do the 1089 trick with 300: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Take 490. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.396 + 693 =
33. 33.Do the 1089 trick with 670: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 225. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 359. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 760. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 940. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 784: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 883: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 193: reverse and subtract, then reverse that answer and add. What do you get?

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