1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 612 · 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 8. What is that number?
2. 2.495 + 594 =
3. 3.Take 845. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Do the 1089 trick with 119: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.Take 280. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Take 623. 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.Take 740. 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 5. What is that number?
10. 10.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Take 548. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.297 + 792 =
13. 13.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Do the 1089 trick with 581: 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 2. What is that number?
16. 16.Do the 1089 trick with 861: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Do the 1089 trick with 906: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Do the 1089 trick with 980: 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 6. What is that number?
20. 20.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
21. 21.693 + 396 =
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 790: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Do the 1089 trick with 730: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Do the 1089 trick with 921: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Take 610. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
28. 28.792 + 297 =
29. 29.594 + 495 =
30. 30.Do the 1089 trick with 589: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Take 812. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.198 + 891 =
33. 33.Do the 1089 trick with 209: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 340: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Do the 1089 trick with 940: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 842. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.891 + 198 =
39. 39.Take 820. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Do the 1089 trick with 740: reverse and subtract, then reverse that answer and add. What do you get?

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