1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 65 · 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. 1.495 + 594 =
2. 2.Take 916. Reverse its digits and take the smaller number away from the bigger one. 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.Take 208. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
6. 6.Take 772. 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. 8.594 + 495 =
9. 9.Take 339. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
11. 11.693 + 396 =
12. 12.Take 229. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
14. 14.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.792 + 297 =
16. 16.Do the 1089 trick with 589: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Do the 1089 trick with 921: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Do the 1089 trick with 813: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 812. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 297. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.198 + 891 =
22. 22.Take 981. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.891 + 198 =
25. 25.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
26. 26.Do the 1089 trick with 105: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Do the 1089 trick with 820: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Do the 1089 trick with 970: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 462: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Do the 1089 trick with 872: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Do the 1089 trick with 943: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.396 + 693 =
33. 33.Take 106. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 826. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 521: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
38. 38.Take 790. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 269: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 957. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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