1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 696 · 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 396. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.Take 227. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.Do the 1089 trick with 559: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.Do the 1089 trick with 522: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.693 + 396 =
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
9. 9.297 + 792 =
10. 10.Take 941. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.891 + 198 =
12. 12.Take 200. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Take 418. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 881. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Do the 1089 trick with 750: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.495 + 594 =
17. 17.Take 917. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 432. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Do the 1089 trick with 710: 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 2. What is that number?
21. 21.396 + 693 =
22. 22.792 + 297 =
23. 23.594 + 495 =
24. 24.Take 217. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
26. 26.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Do the 1089 trick with 792: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Take 199. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Take 940. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
31. 31.Do the 1089 trick with 941: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
33. 33.Do the 1089 trick with 913: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Do the 1089 trick with 654: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.198 + 891 =
36. 36.Take 329. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 870. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 410: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
40. 40.Do the 1089 trick with 573: reverse and subtract, then reverse that answer and add. What do you get?

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