1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 953 · 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. 1.792 + 297 =
2. 2.594 + 495 =
3. 3.Do the 1089 trick with 530: reverse and subtract, then reverse that answer and add. What do you get?
4. 4.297 + 792 =
5. 5.Take 480. Reverse its digits and take the smaller number away from the bigger one. What do you get?
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
7. 7.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
8. 8.Take 954. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Take 760. 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.Take 336. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Take 911. Reverse its digits and take the smaller number away from the bigger one. What do you get?
13. 13.495 + 594 =
14. 14.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
15. 15.Take 644. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.198 + 891 =
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
18. 18.Take 256. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.693 + 396 =
20. 20.Do the 1089 trick with 803: reverse and subtract, then reverse that answer and add. What do you get?
21. 21.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
22. 22.Do the 1089 trick with 850: reverse and subtract, then reverse that answer and add. What do you get?
23. 23.Do the 1089 trick with 900: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Do the 1089 trick with 113: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.Take 660. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
27. 27.Do the 1089 trick with 710: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Do the 1089 trick with 810: reverse and subtract, then reverse that answer and add. What do you get?
29. 29.Do the 1089 trick with 720: reverse and subtract, then reverse that answer and add. What do you get?
30. 30.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
31. 31.Take 710. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.Take 799. Reverse its digits and take the smaller number away from the bigger one. What do you get?
33. 33.Do the 1089 trick with 129: reverse and subtract, then reverse that answer and add. What do you get?
34. 34.Take 572. Reverse its digits and take the smaller number away from the bigger one. What do you get?
35. 35.Do the 1089 trick with 125: reverse and subtract, then reverse that answer and add. What do you get?
36. 36.Take 743. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 381. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.396 + 693 =
39. 39.Take 143. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Do the 1089 trick with 954: reverse and subtract, then reverse that answer and add. What do you get?

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