1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 974 · 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 8. What is that number?
2. 2.Do the 1089 trick with 316: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.Do the 1089 trick with 845: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.Take 765. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Do the 1089 trick with 570: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.Take 569. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Do the 1089 trick with 761: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.792 + 297 =
10. 10.Do the 1089 trick with 791: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.198 + 891 =
12. 12.297 + 792 =
13. 13.396 + 693 =
14. 14.Do the 1089 trick with 381: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
16. 16.Do the 1089 trick with 902: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Take 870. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
19. 19.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
20. 20.Take 630. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 885. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Take 740. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
24. 24.Do the 1089 trick with 957: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 240. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Take 921. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Do the 1089 trick with 922: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Take 592. 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.Take 850. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
32. 32.Take 270. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 744: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Do the 1089 trick with 300: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 740: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 254. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 134: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 600: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 410: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 532: reverse and subtract, then reverse that answer and add. What do you get?

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