1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 234 · 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 7. What is that number?
2. 2.Do the 1089 trick with 940: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.Take 762. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Take 710. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Take 590. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Take 911. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Take 620. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Take 317. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Take 741. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.Do the 1089 trick with 674: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Do the 1089 trick with 720: 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 1. What is that number?
14. 14.594 + 495 =
15. 15.Do the 1089 trick with 630: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Do the 1089 trick with 153: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.396 + 693 =
18. 18.Do the 1089 trick with 227: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 390. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.792 + 297 =
21. 21.Do the 1089 trick with 860: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Take 840. Reverse its digits and take the smaller number away from the bigger one. 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.Do the 1089 trick with 805: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 490. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 740: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 216. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 442. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
30. 30.297 + 792 =
31. 31.Do the 1089 trick with 826: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 461. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.198 + 891 =
34. 34.Do the 1089 trick with 660: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 145: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Do the 1089 trick with 519: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Do the 1089 trick with 598: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
39. 39.Take 200. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Do the 1089 trick with 830: reverse and subtract, then reverse that answer and add. What do you get?

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