1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 125 · 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.Take 760. 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 6. What is that number?
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
5. 5.693 + 396 =
6. 6.Do the 1089 trick with 186: 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 7. 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. 9.891 + 198 =
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
11. 11.396 + 693 =
12. 12.Take 325. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Take 912. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 310. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Take 530. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Take 921. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Do the 1089 trick with 953: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Take 901. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.297 + 792 =
20. 20.Do the 1089 trick with 148: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
22. 22.Take 277. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 743. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.198 + 891 =
25. 25.Take 927. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
27. 27.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
28. 28.Do the 1089 trick with 830: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Take 306. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Do the 1089 trick with 910: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.594 + 495 =
32. 32.Take 643. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 671. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.792 + 297 =
35. 35.Do the 1089 trick with 613: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 820. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 600. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 458. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Do the 1089 trick with 220: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Take 509. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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