1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 319 · 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.Do the 1089 trick with 259: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.198 + 891 =
3. 3.Take 570. 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. 5.594 + 495 =
6. 6.Do the 1089 trick with 613: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.396 + 693 =
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
9. 9.Do the 1089 trick with 608: reverse and subtract, then reverse that answer and add. 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 478: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Take 609. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Do the 1089 trick with 255: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
16. 16.Take 240. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 199. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 598. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.891 + 198 =
20. 20.Take 129. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
22. 22.792 + 297 =
23. 23.Take 137. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 208. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 940: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
28. 28.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
30. 30.Take 980. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Do the 1089 trick with 570: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.297 + 792 =
33. 33.Take 517. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 750: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 734. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Do the 1089 trick with 914: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 487: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 977: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 207. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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