1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 913 · 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. 1.594 + 495 =
2. 2.Take 520. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.Take 590. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.495 + 594 =
5. 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
6. 6.792 + 297 =
7. 7.Do the 1089 trick with 350: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.693 + 396 =
9. 9.Do the 1089 trick with 700: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.297 + 792 =
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
12. 12.Take 330. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.Take 275. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.Do the 1089 trick with 390: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Take 870. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.Do the 1089 trick with 864: reverse and subtract, then reverse that answer and add. What do you get?
17. 17.Take 994. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Take 531. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 390. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 480. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.891 + 198 =
22. 22.Take 753. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.396 + 693 =
24. 24.Do the 1089 trick with 873: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Do the 1089 trick with 168: reverse and subtract, then reverse that answer and add. What do you get?
26. 26.Take 781. Reverse its digits and take the smaller number away from the bigger one. What do you get?
27. 27.Do the 1089 trick with 301: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Do the 1089 trick with 573: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
30. 30.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
31. 31.Do the 1089 trick with 650: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Take 320. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
34. 34.198 + 891 =
35. 35.Take 340. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.Take 614. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 592: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Take 701. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Take 824. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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