1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 516 · 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 861. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.Do the 1089 trick with 127: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
4. 4.Take 800. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.297 + 792 =
6. 6.594 + 495 =
7. 7.Take 530. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
9. 9.396 + 693 =
10. 10.Do the 1089 trick with 540: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Do the 1089 trick with 390: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.198 + 891 =
13. 13.495 + 594 =
14. 14.Take 925. 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 3. What is that number?
16. 16.Take 803. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.693 + 396 =
18. 18.Take 489. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 569. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 976. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Do the 1089 trick with 711: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Do the 1089 trick with 863: 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 2. What is that number?
24. 24.Take 155. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 420. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 806. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Do the 1089 trick with 994: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Take 977. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Do the 1089 trick with 128: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Take 561. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.891 + 198 =
33. 33.792 + 297 =
34. 34.Do the 1089 trick with 147: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 155: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 145. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 663. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 622: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 843: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 511: reverse and subtract, then reverse that answer and add. What do you get?

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