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 961. Reverse its digits and take the smaller number away from the bigger one. What do you get?
- 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
- 3.Take 880. Reverse its digits and take the smaller number away from the bigger one. What do you get?
- 4.Do the 1089 trick with 467: reverse and subtract, then reverse that answer and add. What do you get?
- 5.Take 926. Reverse its digits and take the smaller number away from the bigger one. What do you get?
- 6.495 + 594 =
- 7.Do the 1089 trick with 820: reverse and subtract, then reverse that answer and add. What do you get?
- 8.297 + 792 =
- 9.Take 760. Reverse its digits and take the smaller number away from the bigger one. What do you get?
- 10.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
- 11.Take 906. Reverse its digits and take the smaller number away from the bigger one. What do you get?
- 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
- 13.Take 360. Reverse its digits and take the smaller number away from the bigger one. What do you get?
- 14.Do the 1089 trick with 428: reverse and subtract, then reverse that answer and add. What do you get?
- 15.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
- 16.Do the 1089 trick with 620: reverse and subtract, then reverse that answer and add. What do you get?
- 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
- 18.Do the 1089 trick with 941: reverse and subtract, then reverse that answer and add. What do you get?
- 19.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
- 20.Do the 1089 trick with 401: reverse and subtract, then reverse that answer and add. What do you get?
- 21.Do the 1089 trick with 583: reverse and subtract, then reverse that answer and add. What do you get?
- 22.594 + 495 =
- 23.Take 790. Reverse its digits and take the smaller number away from the bigger one. What do you get?
- 24.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
- 25.396 + 693 =
- 26.Take 931. Reverse its digits and take the smaller number away from the bigger one. What do you get?
- 27.Take 375. Reverse its digits and take the smaller number away from the bigger one. What do you get?
- 28.Take 943. Reverse its digits and take the smaller number away from the bigger one. What do you get?
- 29.Do the 1089 trick with 801: reverse and subtract, then reverse that answer and add. What do you get?
- 30.Do the 1089 trick with 749: reverse and subtract, then reverse that answer and add. What do you get?
- 31.Take 357. Reverse its digits and take the smaller number away from the bigger one. What do you get?
- 32.Do the 1089 trick with 950: reverse and subtract, then reverse that answer and add. What do you get?
- 33.Do the 1089 trick with 997: reverse and subtract, then reverse that answer and add. What do you get?
- 34.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
- 35.Take 589. Reverse its digits and take the smaller number away from the bigger one. What do you get?
- 36.Take 659. Reverse its digits and take the smaller number away from the bigger one. What do you get?
- 37.Do the 1089 trick with 296: reverse and subtract, then reverse that answer and add. What do you get?
- 38.Do the 1089 trick with 129: reverse and subtract, then reverse that answer and add. What do you get?
- 39.Take 320. Reverse its digits and take the smaller number away from the bigger one. What do you get?
- 40.Do the 1089 trick with 862: reverse and subtract, then reverse that answer and add. What do you get?
Answer key
- 792
- 198
- 792
- 1089
- 297
- 1089
- 1089
- 1089
- 693
- 396
- 297
- 891
- 297
- 1089
- 792
- 1089
- 297
- 1089
- 594
- 1089
- 1089
- 1089
- 693
- 495
- 1089
- 792
- 198
- 594
- 1089
- 1089
- 396
- 1089
- 1089
- 693
- 396
- 297
- 1089
- 1089
- 297
- 1089
Free maths tricks lessons, practice and worksheets at talentjr.in/maths-tricks