1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 48 · 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.Do the 1089 trick with 590: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.396 + 693 =
3. 3.Do the 1089 trick with 649: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
5. 5.Take 851. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Do the 1089 trick with 601: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
10. 10.594 + 495 =
11. 11.Take 257. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
13. 13.Do the 1089 trick with 983: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.792 + 297 =
15. 15.693 + 396 =
16. 16.Take 177. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 189. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
19. 19.495 + 594 =
20. 20.Do the 1089 trick with 527: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Do the 1089 trick with 720: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Do the 1089 trick with 711: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Do the 1089 trick with 183: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Take 730. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 650: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Do the 1089 trick with 851: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.891 + 198 =
29. 29.Do the 1089 trick with 961: 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 6. What is that number?
31. 31.Take 410. 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 3. What is that number?
33. 33.Do the 1089 trick with 740: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Do the 1089 trick with 780: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 921. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 860: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 722. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 489. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 800: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 426. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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