Multiplying any number by 11 may seem tricky at first, but with a simple shortcut, you can do it in just a few seconds—without using a calculator. This smart trick helps you break the number into parts, add digits quickly, and get the answer almost instantly. It’s especially useful for students preparing for exams where speed and accuracy matter the most. Once you understand this method, you’ll be able to solve multiplication problems faster and with more confidence.
Multiply Any Number by 11
- Example: 23 × 11
Step 1: Write digits with space
2 _ 3
Step 2: Add digits (2 + 3 = 5)
Step 3: Put result in middle
Answer: 253
More Examples
2. 45 × 11
→ 4 _ 5
→ 4+5 = 9
495
3. 72 × 11
→ 7 _ 2
→ 7+2 = 9
792
Special Case (Carry)
Example 4 : 58 × 11
→ 5 _ 8
→ 5+8 = 13
Write 3 and carry 1
638
5. 45 × 11
→ 4 _ 5
→ 4+5 = 9
495
6. 72 × 11
→ 7 _ 2
→ 7+2 = 9
792
Special Case (Carry)
Example:7. 58 × 11
→ 5 _ 8
→ 5+8 = 13
Write 3 and carry 1
638
8. 32 × 11
→ 3 _ 2
→ 3 + 2 = 5
352
9. 64 × 11
→ 6 _ 4
→ 6 + 4 = 10 (carry case, but simple)
704
10. 81 × 11
→ 8 _ 1
→ 8 + 1 = 9
891
With Carry (Important for Exams)
11. 76 × 11
→ 7 _ 6
→ 7 + 6 = 13
→ Write 3, carry 1
836
12. 59 × 11
→ 5 _ 9
→ 5 + 9 = 14
→ Write 4, carry 1
649
13. 88 × 11
→ 8 _ 8
→ 8 + 8 = 16
968
3-Digit Number Trick
14. 123 × 11
Step:
→ 1 _ 2 _ 3
→ 1+2 = 3
→ 2+3 = 5
1353
15. 245 × 11
→ 2 _ 4 _ 5
→ 2+4 = 6
→ 4+5 = 9
2695
3-Digit with Carry
16. 369 × 11
→ 3 _ 6 _ 9
→ 3+6 = 9
→ 6+9 = 15
Handle carry
4059
17. 587 × 11
→ 5 _ 8 _ 7
→ 5+8 = 13
→ 8+7 = 15
Final Answer: 6457