1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 179 · 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 511. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.Take 992. 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 4. What is that number?
4. 4.693 + 396 =
5. 5.Do the 1089 trick with 860: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
7. 7.Do the 1089 trick with 861: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
9. 9.Take 931. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
11. 11.Take 520. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.891 + 198 =
13. 13.Do the 1089 trick with 632: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Take 834. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Take 604. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
17. 17.198 + 891 =
18. 18.Take 762. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 801. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Do the 1089 trick with 679: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Do the 1089 trick with 128: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Do the 1089 trick with 178: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Do the 1089 trick with 512: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.297 + 792 =
25. 25.Do the 1089 trick with 614: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Take 329. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.594 + 495 =
29. 29.Do the 1089 trick with 601: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Take 133. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Do the 1089 trick with 408: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 361. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Take 491. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 610: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 174. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
38. 38.Do the 1089 trick with 328: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
40. 40.Take 670. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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