Symmetry
A expression in maths is a collection of terms without an equality sign.
The Maths terms combination and permutation apply in chemistry when making the expected industrial calculation.
To turn.
1st
1000 cc
A gross is 144.
because there is no mathematical terms in English and maths tends to suck anyway
For answer see http://mathsduck.co.uk/
it is across, like the horizon.
a power is a power
A score is equal to 20.