1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 912 · 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 3. What is that number?
2. 2.792 + 297 =
3. 3.Take 551. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Do the 1089 trick with 743: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
6. 6.Take 901. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.297 + 792 =
8. 8.Do the 1089 trick with 609: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
12. 12.Do the 1089 trick with 335: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Do the 1089 trick with 560: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.396 + 693 =
15. 15.Take 250. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.198 + 891 =
17. 17.Take 580. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 157. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Do the 1089 trick with 835: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Do the 1089 trick with 692: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Do the 1089 trick with 331: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Take 721. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Do the 1089 trick with 116: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Do the 1089 trick with 620: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.594 + 495 =
26. 26.Take 270. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Take 822. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Do the 1089 trick with 760: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 664: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
31. 31.Do the 1089 trick with 259: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 158: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 218. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.891 + 198 =
36. 36.Do the 1089 trick with 375: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
38. 38.Take 560. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 970. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Do the 1089 trick with 912: reverse and subtract, then reverse that answer and add. What do you get?

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