1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 75 · 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. 1.792 + 297 =
2. 2.396 + 693 =
3. 3.Take 569. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.594 + 495 =
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
6. 6.Do the 1089 trick with 907: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Do the 1089 trick with 270: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Take 981. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Do the 1089 trick with 970: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.Do the 1089 trick with 679: 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 5. What is that number?
12. 12.Take 611. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.297 + 792 =
14. 14.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
15. 15.891 + 198 =
16. 16.Take 735. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Do the 1089 trick with 860: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Do the 1089 trick with 328: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 470. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.495 + 594 =
21. 21.Take 360. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Take 722. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 135. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
25. 25.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
26. 26.Take 801. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Do the 1089 trick with 452: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Do the 1089 trick with 739: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 944: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Do the 1089 trick with 700: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
33. 33.Take 278. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
35. 35.Do the 1089 trick with 330: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Do the 1089 trick with 598: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Do the 1089 trick with 562: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 955. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 653. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 654. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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