1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 7 · 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 316. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
3. 3.594 + 495 =
4. 4.Take 254. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Do the 1089 trick with 549: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.Take 264. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Take 880. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.396 + 693 =
9. 9.Take 370. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Take 460. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.792 + 297 =
12. 12.Do the 1089 trick with 924: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Take 179. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 750. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Take 641. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.198 + 891 =
19. 19.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
20. 20.Take 439. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Do the 1089 trick with 940: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Do the 1089 trick with 158: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
24. 24.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
25. 25.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
26. 26.Do the 1089 trick with 701: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Do the 1089 trick with 366: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.693 + 396 =
29. 29.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
30. 30.Take 125. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 447. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Do the 1089 trick with 841: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 834. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 997: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 127. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 618. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 610: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 496. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 350. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Do the 1089 trick with 689: reverse and subtract, then reverse that answer and add. What do you get?

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