1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 522 · 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 238. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.693 + 396 =
3. 3.495 + 594 =
4. 4.Do the 1089 trick with 921: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.594 + 495 =
6. 6.Take 632. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.297 + 792 =
8. 8.Do the 1089 trick with 509: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.396 + 693 =
10. 10.Take 487. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Take 841. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Do the 1089 trick with 750: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Take 376. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Do the 1089 trick with 870: 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 5. What is that number?
16. 16.891 + 198 =
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
18. 18.Do the 1089 trick with 894: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 520. Reverse its digits and take the smaller number away from the bigger one. 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.Do the 1089 trick with 860: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Do the 1089 trick with 278: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Take 861. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
25. 25.Take 854. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 925. 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 4. What is that number?
28. 28.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
29. 29.Do the 1089 trick with 640: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Do the 1089 trick with 217: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
32. 32.Do the 1089 trick with 927: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
34. 34.Do the 1089 trick with 813: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 285. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 740: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Do the 1089 trick with 250: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 246: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 194. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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