1089 Trick Worksheet
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.
NameDateTime takenScore ___ / 40
- 1.Take 886. Reverse its digits and take the smaller number away from the bigger one. What do you get?
- 2.Take 357. Reverse its digits and take the smaller number away from the bigger one. What do you get?
- 3.Do the 1089 trick with 722: reverse and subtract, then reverse that answer and add. What do you get?
- 4.Take 960. Reverse its digits and take the smaller number away from the bigger one. What do you get?
- 5.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
- 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
- 7.594 + 495 =
- 8.Do the 1089 trick with 734: reverse and subtract, then reverse that answer and add. What do you get?
- 9.891 + 198 =
- 10.Do the 1089 trick with 197: reverse and subtract, then reverse that answer and add. What do you get?
- 11.Take 771. Reverse its digits and take the smaller number away from the bigger one. What do you get?
- 12.396 + 693 =
- 13.Do the 1089 trick with 532: reverse and subtract, then reverse that answer and add. What do you get?
- 14.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
- 15.Take 600. Reverse its digits and take the smaller number away from the bigger one. What do you get?
- 16.Take 422. Reverse its digits and take the smaller number away from the bigger one. What do you get?
- 17.Take 654. Reverse its digits and take the smaller number away from the bigger one. What do you get?
- 18.Do the 1089 trick with 920: reverse and subtract, then reverse that answer and add. What do you get?
- 19.Take 662. Reverse its digits and take the smaller number away from the bigger one. What do you get?
- 20.Do the 1089 trick with 745: reverse and subtract, then reverse that answer and add. What do you get?
- 21.Take 870. Reverse its digits and take the smaller number away from the bigger one. What do you get?
- 22.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
- 23.Take 882. Reverse its digits and take the smaller number away from the bigger one. What do you get?
- 24.Take 498. Reverse its digits and take the smaller number away from the bigger one. What do you get?
- 25.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
- 26.Take 701. Reverse its digits and take the smaller number away from the bigger one. What do you get?
- 27.Do the 1089 trick with 402: reverse and subtract, then reverse that answer and add. What do you get?
- 28.Do the 1089 trick with 692: reverse and subtract, then reverse that answer and add. What do you get?
- 29.Take 920. Reverse its digits and take the smaller number away from the bigger one. What do you get?
- 30.Do the 1089 trick with 145: reverse and subtract, then reverse that answer and add. What do you get?
- 31.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
- 32.Do the 1089 trick with 930: reverse and subtract, then reverse that answer and add. What do you get?
- 33.Do the 1089 trick with 741: reverse and subtract, then reverse that answer and add. What do you get?
- 34.Take 408. Reverse its digits and take the smaller number away from the bigger one. What do you get?
- 35.Do the 1089 trick with 621: reverse and subtract, then reverse that answer and add. What do you get?
- 36.Do the 1089 trick with 198: reverse and subtract, then reverse that answer and add. What do you get?
- 37.Take 319. Reverse its digits and take the smaller number away from the bigger one. What do you get?
- 38.Take 299. Reverse its digits and take the smaller number away from the bigger one. What do you get?
- 39.Take 441. Reverse its digits and take the smaller number away from the bigger one. What do you get?
- 40.Take 689. Reverse its digits and take the smaller number away from the bigger one. What do you get?
Answer key
- 198
- 396
- 1089
- 891
- 396
- 891
- 1089
- 1089
- 1089
- 1089
- 594
- 1089
- 1089
- 297
- 594
- 198
- 198
- 1089
- 396
- 1089
- 792
- 198
- 594
- 396
- 792
- 594
- 1089
- 1089
- 891
- 1089
- 594
- 1089
- 1089
- 396
- 1089
- 1089
- 594
- 693
- 297
- 297
Free maths tricks lessons, practice and worksheets at talentjr.in/maths-tricks