Multiplying By One
When we multiply by 1, the value stays the same.
Example: 12 × 1 = 12
Also when the 1 is in the front of the multiplication:
Example: 1 × 5 = 5
Or in the middle:
Example: 6 × 1 × 7 = 6 × 7 = 42
This simple idea is called the Multiplicative Identity. Think of 1 as a "magic number" that leaves any number unchanged when multiplied!
But don't get carried away, this only works for multiplies. Adding or subtracting 1 changes the value!
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