Binary multiplication method
https://www.cuemath.com/numbers/binary-multiplication/
- 0 x 0 = 0
- 0 x 1 = 0
- 1 x 0 = 0
- 1 x 1 = 1
Uses the same idea as Long Decimal Multiplication
1011 (this is binary for decimal 11)
× 1110 (this is binary for decimal 14)
======
0000 (this is 1011 × 0)
1011 (this is 1011 × 1, shifted one position to the left)
1011 (this is 1011 × 1, shifted two positions to the left)
+ 1011 (this is 1011 × 1, shifted three positions to the left)
=========
10011010 (this is binary for decimal 154)
| 1 | 0 | 1 | |
|---|---|---|---|
| 1 | 1 | ||
| 1 | 0 | 1 | |
| 1 | 0 | 1 | 0 |
| 1 | 1 | 1 | 1 |
| 5 x 3 = 15 |
Very easy to do. Just don't get mixed up with what you're multiplying against.