1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 874 · 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. 1.495 + 594 =
2. 2.198 + 891 =
3. 3.Take 408. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Take 852. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Take 971. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Take 990. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Take 168. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
9. 9.Take 734. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.Do the 1089 trick with 773: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
12. 12.Do the 1089 trick with 940: 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 3. What is that number?
14. 14.Take 123. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Do the 1089 trick with 591: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
17. 17.Do the 1089 trick with 349: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Take 722. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.297 + 792 =
20. 20.594 + 495 =
21. 21.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
22. 22.Take 125. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 398. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 391: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.891 + 198 =
26. 26.Take 761. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Do the 1089 trick with 962: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Take 590. 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 6. What is that number?
30. 30.Take 770. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 980. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 325. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.693 + 396 =
35. 35.Take 673. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 810: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 840. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 891. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 581: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 496: reverse and subtract, then reverse that answer and add. What do you get?

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