1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 115 · 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. 1.198 + 891 =
2. 2.594 + 495 =
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
4. 4.Take 650. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Do the 1089 trick with 678: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.Take 990. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Do the 1089 trick with 862: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Take 138. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
11. 11.Do the 1089 trick with 336: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.693 + 396 =
13. 13.396 + 693 =
14. 14.297 + 792 =
15. 15.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
16. 16.495 + 594 =
17. 17.Do the 1089 trick with 759: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Take 940. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Do the 1089 trick with 476: 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 3. What is that number?
21. 21.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
22. 22.Take 810. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 480. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 294: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 860. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 855: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 209. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 537: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Take 200. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Do the 1089 trick with 764: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.891 + 198 =
32. 32.Do the 1089 trick with 406: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 305. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 830. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 740. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 800. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 338. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 801. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
40. 40.Take 901. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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