1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 628 · 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 1. What is that number?
2. 2.297 + 792 =
3. 3.Take 760. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.693 + 396 =
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
6. 6.198 + 891 =
7. 7.Take 926. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.594 + 495 =
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
11. 11.Do the 1089 trick with 470: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Take 410. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Take 980. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Do the 1089 trick with 730: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Take 176. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Do the 1089 trick with 940: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.891 + 198 =
18. 18.Take 560. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Do the 1089 trick with 295: 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 6. What is that number?
21. 21.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
22. 22.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 940. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 218: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 430. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 912: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 543. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 820: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Take 943. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Do the 1089 trick with 870: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Take 638. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 964. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 610: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Do the 1089 trick with 418: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 527. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 199: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Do the 1089 trick with 644: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 459. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 386. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?

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