1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 441 · 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.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
3. 3.Do the 1089 trick with 508: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
5. 5.198 + 891 =
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
7. 7.Do the 1089 trick with 320: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Take 395. 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.Take 184. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Do the 1089 trick with 225: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Do the 1089 trick with 275: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Do the 1089 trick with 129: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Do the 1089 trick with 229: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Take 926. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.396 + 693 =
17. 17.891 + 198 =
18. 18.Take 670. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 937. 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 6. What is that number?
21. 21.Take 270. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
23. 23.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
24. 24.Do the 1089 trick with 981: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 224. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 936. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 850: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 270: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.495 + 594 =
31. 31.Do the 1089 trick with 399: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.693 + 396 =
33. 33.Do the 1089 trick with 830: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 940. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.594 + 495 =
36. 36.Take 147. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 133: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 831: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 932: reverse and subtract, then reverse that answer and add. What do you get?

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