1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 996 · 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.Do the 1089 trick with 962: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.Do the 1089 trick with 803: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.Do the 1089 trick with 820: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.594 + 495 =
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
6. 6.396 + 693 =
7. 7.Take 941. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Take 300. 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 6. What is that number?
10. 10.Take 810. Reverse its digits and take the smaller number away from the bigger one. What do you get?
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
12. 12.792 + 297 =
13. 13.Take 980. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 103. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Take 277. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Take 284. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Do the 1089 trick with 368: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 780. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Do the 1089 trick with 905: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Do the 1089 trick with 359: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Do the 1089 trick with 703: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Take 270. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.198 + 891 =
25. 25.Do the 1089 trick with 874: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.297 + 792 =
27. 27.Take 910. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.495 + 594 =
29. 29.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
30. 30.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
31. 31.Do the 1089 trick with 916: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.693 + 396 =
33. 33.Take 559. 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 7. What is that number?
35. 35.Take 927. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 800: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 513. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 580. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 267. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 914. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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