1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 161 · 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 508. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.Do the 1089 trick with 410: reverse and subtract, then reverse that answer and add. What do you get?
3. 3.495 + 594 =
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
5. 5.Take 824. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.Take 840. Reverse its digits and take the smaller number away from the bigger one. What do you get?
7. 7.Take 613. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Do the 1089 trick with 563: reverse and subtract, then reverse that answer and add. What do you get?
9. 9.Do the 1089 trick with 652: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.Take 661. 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 6. What is that number?
12. 12.Do the 1089 trick with 345: 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 4. What is that number?
14. 14.Take 930. Reverse its digits and take the smaller number away from the bigger one. What do you get?
15. 15.891 + 198 =
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
18. 18.Do the 1089 trick with 267: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 158. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Do the 1089 trick with 830: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Take 963. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Do the 1089 trick with 442: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.693 + 396 =
25. 25.Do the 1089 trick with 590: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Take 800. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Do the 1089 trick with 562: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.198 + 891 =
29. 29.Take 127. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Take 990. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.396 + 693 =
32. 32.Do the 1089 trick with 256: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Do the 1089 trick with 238: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 956. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Take 720. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.594 + 495 =
39. 39.Take 981. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 654. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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