1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 757 · 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. 1.693 + 396 =
2. 2.Do the 1089 trick with 980: 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.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
6. 6.594 + 495 =
7. 7.495 + 594 =
8. 8.Do the 1089 trick with 188: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Take 946. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Take 719. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Do the 1089 trick with 762: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.891 + 198 =
13. 13.Take 663. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Do the 1089 trick with 832: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Do the 1089 trick with 553: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Do the 1089 trick with 246: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Take 560. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Do the 1089 trick with 965: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Do the 1089 trick with 610: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Do the 1089 trick with 513: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.297 + 792 =
24. 24.Take 603. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 962. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 520: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Do the 1089 trick with 632: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Take 691. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 568: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 250. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.198 + 891 =
32. 32.Do the 1089 trick with 977: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 220. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
35. 35.Take 826. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 703. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.792 + 297 =
38. 38.Take 600. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 891. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 507. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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