1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 994 · 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 235: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.297 + 792 =
3. 3.Take 250. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Do the 1089 trick with 931: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.891 + 198 =
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
7. 7.Do the 1089 trick with 459: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Take 804. 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 1. What is that number?
10. 10.Do the 1089 trick with 348: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Do the 1089 trick with 288: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Do the 1089 trick with 590: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
14. 14.Do the 1089 trick with 210: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.396 + 693 =
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
17. 17.594 + 495 =
18. 18.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
19. 19.Do the 1089 trick with 530: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
21. 21.Take 821. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.495 + 594 =
23. 23.Take 580. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 935. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 396. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
27. 27.Do the 1089 trick with 672: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Do the 1089 trick with 880: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Take 431. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Do the 1089 trick with 856: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Take 835. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 780. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 610. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 934. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.792 + 297 =
36. 36.Do the 1089 trick with 553: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 298. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 177. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 972. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Do the 1089 trick with 169: reverse and subtract, then reverse that answer and add. What do you get?

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