1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 852 · 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 350: reverse and subtract, then reverse that answer and add. What do you get?
2. 2.198 + 891 =
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
4. 4.Take 137. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Do the 1089 trick with 980: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.Do the 1089 trick with 258: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Take 850. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Do the 1089 trick with 993: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Take 940. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
11. 11.297 + 792 =
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
13. 13.594 + 495 =
14. 14.Take 147. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.Take 420. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
17. 17.Do the 1089 trick with 561: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Take 329. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.792 + 297 =
20. 20.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
21. 21.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
22. 22.Take 570. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Take 533. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
25. 25.Do the 1089 trick with 902: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Take 337. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.396 + 693 =
28. 28.Take 158. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Do the 1089 trick with 770: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.Do the 1089 trick with 410: reverse and subtract, then reverse that answer and add. What do you get?
31. 31.Do the 1089 trick with 720: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Do the 1089 trick with 930: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Do the 1089 trick with 612: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Do the 1089 trick with 459: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Take 248. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 558: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Do the 1089 trick with 149: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Take 418. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 578. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.891 + 198 =

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