1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 505 · 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.Take 620. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.693 + 396 =
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
4. 4.Do the 1089 trick with 460: reverse and subtract, then reverse that answer and add. What do you get?
5. 5.594 + 495 =
6. 6.Do the 1089 trick with 729: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Do the 1089 trick with 227: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Take 940. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Do the 1089 trick with 216: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.891 + 198 =
11. 11.Do the 1089 trick with 358: reverse and subtract, then reverse that answer and add. What do you get?
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
13. 13.Take 670. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Take 370. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Do the 1089 trick with 941: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.Do the 1089 trick with 294: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.297 + 792 =
18. 18.396 + 693 =
19. 19.Take 562. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 762. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 763. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
23. 23.Take 361. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Do the 1089 trick with 803: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
26. 26.Do the 1089 trick with 862: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.792 + 297 =
28. 28.Take 864. 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 2. What is that number?
30. 30.Take 437. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 550. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 331. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.198 + 891 =
34. 34.Take 599. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 793. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 588. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 983: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 765: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Take 719. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 167. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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