1089 Trick Worksheet

Maths tricks trick 7: The 1089 magic trick · Set 964 · 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 521. Reverse its digits and take the smaller number away from the bigger one. What do you get?
2. 2.Take 297. Reverse its digits and take the smaller number away from the bigger one. What do you get?
3. 3.297 + 792 =
4. 4.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
5. 5.396 + 693 =
6. 6.Do the 1089 trick with 167: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.Take 200. Reverse its digits and take the smaller number away from the bigger one. What do you get?
8. 8.Take 133. 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 8. What is that number?
10. 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
11. 11.Take 941. Reverse its digits and take the smaller number away from the bigger one. What do you get?
12. 12.Do the 1089 trick with 722: reverse and subtract, then reverse that answer and add. What do you get?
13. 13.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
14. 14.198 + 891 =
15. 15.Take 491. Reverse its digits and take the smaller number away from the bigger one. What do you get?
16. 16.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
17. 17.Take 440. Reverse its digits and take the smaller number away from the bigger one. What do you get?
18. 18.Do the 1089 trick with 176: reverse and subtract, then reverse that answer and add. What do you get?
19. 19.Take 250. Reverse its digits and take the smaller number away from the bigger one. What do you get?
20. 20.Take 800. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.Do the 1089 trick with 791: reverse and subtract, then reverse that answer and add. What do you get?
22. 22.Take 608. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Do the 1089 trick with 309: reverse and subtract, then reverse that answer and add. What do you get?
24. 24.Take 277. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.891 + 198 =
26. 26.Do the 1089 trick with 930: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Take 601. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.Take 840. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Take 976. Reverse its digits and take the smaller number away from the bigger one. What do you get?
30. 30.Take 208. Reverse its digits and take the smaller number away from the bigger one. What do you get?
31. 31.Do the 1089 trick with 330: reverse and subtract, then reverse that answer and add. What do you get?
32. 32.Do the 1089 trick with 972: reverse and subtract, then reverse that answer and add. What do you get?
33. 33.Take 350. Reverse its digits and take the smaller number away from the bigger one. What do you get?
34. 34.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
35. 35.Take 841. Reverse its digits and take the smaller number away from the bigger one. What do you get?
36. 36.Take 891. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.Do the 1089 trick with 431: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.Do the 1089 trick with 419: reverse and subtract, then reverse that answer and add. What do you get?
39. 39.Do the 1089 trick with 830: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.Do the 1089 trick with 220: reverse and subtract, then reverse that answer and add. What do you get?

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