1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 1 · 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. 1.594 + 495 =
2. 2.Take 386. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.198 + 891 =
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
5. 5.Take 196. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Do the 1089 trick with 895: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Do the 1089 trick with 974: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Take 639. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Do the 1089 trick with 406: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.Do the 1089 trick with 368: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.Take 539. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Do the 1089 trick with 860: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
14. 14.Take 701. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Do the 1089 trick with 865: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Do the 1089 trick with 982: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Take 509. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Do the 1089 trick with 104: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 379. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.792 + 297 =
21. 21.Do the 1089 trick with 409: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Take 890. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 942. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 990. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
26. 26.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
27. 27.Do the 1089 trick with 458: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Do the 1089 trick with 800: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 610: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Do the 1089 trick with 925: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.297 + 792 =
32. 32.Do the 1089 trick with 714: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 970. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.693 + 396 =
36. 36.Do the 1089 trick with 682: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.396 + 693 =
38. 38.Do the 1089 trick with 229: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Take 980. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Do the 1089 trick with 794: reverse and subtract, then reverse that answer and add. What do you get?

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