1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 213 · 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 760. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.Take 820. 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 2. What is that number?
4. 4.Take 260. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.891 + 198 =
6. 6.693 + 396 =
7. 7.198 + 891 =
8. 8.Take 824. 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.Do the 1089 trick with 803: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.792 + 297 =
12. 12.Do the 1089 trick with 178: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
14. 14.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
15. 15.Take 200. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Take 406. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 650. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Do the 1089 trick with 628: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 901. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Do the 1089 trick with 931: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Take 269. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Take 624. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 841. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 680. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.594 + 495 =
26. 26.Do the 1089 trick with 432: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 471. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.495 + 594 =
29. 29.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
30. 30.Do the 1089 trick with 620: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Take 510. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 113. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 487: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Do the 1089 trick with 763: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.297 + 792 =
36. 36.Take 612. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 407: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 179: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 238: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 749. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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