Maths idea: Semi-multiplication and Semi-division

Semi-multiplication is when you only multiply half of a number,

For example, 4 semi-multiplied by 2 is 6  because you are only multiplying half of 4 by 2 and adding it to the other half of 4.

Or for example, 3 semi-multiplied by 2 would be 4 and a half (because half of 3 is 1 and a half which multiplied by 2 is 3 and 3 added to the other half of 3 is 4 and a half)

Likewise, Semi-division is when you only divide half a number,

For example, 8 semi-divided by 2 is 6 because you’re only dividing half of 8 (half of 8 is 4, 4 divided by 2 is 2 and 2 added to the other half of 8 is 6)

Or 12 semi-divided by 3 would be 9 because you’re only dividing half of 12 (half of 12 is 6, 6 divided by 2 is 3, 3 plus the other half of 12 is 9)