1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 690 · 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 3. What is that number?
2. 2.Take 602. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.Do the 1089 trick with 730: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.Take 835. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Do the 1089 trick with 129: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.Take 507. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.396 + 693 =
8. 8.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Take 785. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Take 218. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.297 + 792 =
12. 12.891 + 198 =
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 6. What is that number?
15. 15.Do the 1089 trick with 662: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Do the 1089 trick with 340: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Do the 1089 trick with 520: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Do the 1089 trick with 722: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 380. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 285. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
22. 22.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
23. 23.Do the 1089 trick with 690: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Do the 1089 trick with 960: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 860. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 196: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Do the 1089 trick with 963: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.495 + 594 =
29. 29.Do the 1089 trick with 416: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
31. 31.Take 503. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
33. 33.Do the 1089 trick with 640: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.594 + 495 =
35. 35.Take 941. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 840: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.693 + 396 =
38. 38.Take 119. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 762: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 630: reverse and subtract, then reverse that answer and add. What do you get?

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