1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 759 · 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 5. What is that number?
2. 2.Take 163. 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 8. What is that number?
5. 5.495 + 594 =
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
7. 7.Do the 1089 trick with 357: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Do the 1089 trick with 630: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.792 + 297 =
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
11. 11.693 + 396 =
12. 12.Do the 1089 trick with 621: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Do the 1089 trick with 862: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.297 + 792 =
15. 15.891 + 198 =
16. 16.Take 451. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.Do the 1089 trick with 335: reverse and subtract, then reverse that answer and add. What do you get?
18. 18.Do the 1089 trick with 550: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 245. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Do the 1089 trick with 278: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.Take 755. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.396 + 693 =
24. 24.Take 993. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Do the 1089 trick with 320: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Do the 1089 trick with 742: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
28. 28.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Take 951. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Do the 1089 trick with 982: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 750. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Take 320. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 456: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.Do the 1089 trick with 990: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Do the 1089 trick with 249: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 791. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Take 305. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.Take 347. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Do the 1089 trick with 810: reverse and subtract, then reverse that answer and add. What do you get?

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