1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 472 · 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 1. What is that number?
2. 2.594 + 495 =
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
4. 4.Take 600. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Take 931. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.495 + 594 =
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
9. 9.Do the 1089 trick with 169: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
11. 11.Take 119. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Take 247. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.297 + 792 =
14. 14.Do the 1089 trick with 784: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Take 719. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Do the 1089 trick with 380: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Take 830. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Do the 1089 trick with 902: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.396 + 693 =
20. 20.Take 529. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 520: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Take 996. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 990: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 179. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 820. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.693 + 396 =
29. 29.Take 274. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
31. 31.Take 297. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 185. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.891 + 198 =
34. 34.Take 308. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 177: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Do the 1089 trick with 842: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Do the 1089 trick with 860: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 370: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 280: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 860. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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