1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 811 · 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 288. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
3. 3.Do the 1089 trick with 239: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.495 + 594 =
5. 5.Take 912. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.396 + 693 =
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
8. 8.Do the 1089 trick with 553: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
10. 10.Do the 1089 trick with 235: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Do the 1089 trick with 359: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Take 990. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Take 671. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.297 + 792 =
15. 15.Take 775. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Take 128. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
18. 18.Take 125. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Do the 1089 trick with 986: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Do the 1089 trick with 189: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
22. 22.Take 744. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 926. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 318. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 893. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 580: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 390. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Take 305. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.891 + 198 =
31. 31.Do the 1089 trick with 138: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 664. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
34. 34.Take 980. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
36. 36.Take 436. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 500. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 119. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 661. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 701. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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