1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 620 · 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 268. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.Take 987. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
4. 4.Take 107. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Take 910. 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.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
8. 8.Take 713. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
10. 10.Do the 1089 trick with 654: reverse and subtract, then reverse that answer and add. What do you get?
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
13. 13.Take 964. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Do the 1089 trick with 954: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Do the 1089 trick with 375: reverse and subtract, then reverse that answer and add. What do you get?
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
17. 17.297 + 792 =
18. 18.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.495 + 594 =
20. 20.Take 119. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Take 125. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.Do the 1089 trick with 815: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Take 280. Reverse its digits and take the smaller number away from the bigger one. What do you get?
24. 24.Take 114. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Take 995. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Do the 1089 trick with 500: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Do the 1089 trick with 760: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Take 670. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Take 864. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Take 850. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Take 612. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
33. 33.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
34. 34.198 + 891 =
35. 35.Take 466. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 593. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 952. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 442: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 994: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.396 + 693 =

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