1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 271 · 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. 2.594 + 495 =
3. 3.Do the 1089 trick with 811: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.Take 126. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
6. 6.693 + 396 =
7. 7.Do the 1089 trick with 760: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Take 955. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
10. 10.198 + 891 =
11. 11.Do the 1089 trick with 398: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Do the 1089 trick with 420: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.Do the 1089 trick with 876: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Do the 1089 trick with 563: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Take 740. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
18. 18.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
19. 19.Take 581. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Do the 1089 trick with 240: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Take 810. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Take 874. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 905. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 916. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 210. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 975: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Do the 1089 trick with 901: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Take 496. 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 5. What is that number?
30. 30.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
31. 31.Take 863. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 750. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 963: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 179. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
36. 36.Do the 1089 trick with 903: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 630. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.297 + 792 =
39. 39.Do the 1089 trick with 351: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.891 + 198 =

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