1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 299 · 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. 1.891 + 198 =
2. 2.Take 447. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.Take 845. Reverse its digits and take the smaller number away from the bigger one. What do you get?
4. 4.Take 407. Reverse its digits and take the smaller number away from the bigger one. What do you get?
5. 5.Do the 1089 trick with 944: reverse and subtract, then reverse that answer and add. What do you get?
6. 6.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Do the 1089 trick with 791: reverse and subtract, then reverse that answer and add. What do you get?
8. 8.Take 810. Reverse its digits and take the smaller number away from the bigger one. What do you get?
9. 9.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
13. 13.Take 159. Reverse its digits and take the smaller number away from the bigger one. What do you get?
14. 14.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
15. 15.495 + 594 =
16. 16.Take 970. Reverse its digits and take the smaller number away from the bigger one. What do you get?
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
18. 18.Take 325. Reverse its digits and take the smaller number away from the bigger one. What do you get?
19. 19.Take 648. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.297 + 792 =
21. 21.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
22. 22.594 + 495 =
23. 23.Take 236. 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 881. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.693 + 396 =
27. 27.Do the 1089 trick with 994: reverse and subtract, then reverse that answer and add. What do you get?
28. 28.Take 451. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Take 619. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Take 539. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.792 + 297 =
32. 32.Do the 1089 trick with 320: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 200. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.Do the 1089 trick with 870: reverse and subtract, then reverse that answer and add. What do you get?
35. 35.198 + 891 =
36. 36.Take 600. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Take 990. Reverse its digits and take the smaller number away from the bigger one. What do you get?
38. 38.Do the 1089 trick with 370: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Take 934. Reverse its digits and take the smaller number away from the bigger one. What do you get?
40. 40.Do the 1089 trick with 340: reverse and subtract, then reverse that answer and add. What do you get?

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