Twelve minus two leaves ten.

Eight minus four gives four.

That man came back minus an arm.

He escaped minus his hat and coat.

This knife cannot cut，for it is minus an edge.

Numbers smaller than zero are called minus quantities such as -5 and -8

There is only one digit which has neither plus nor minus value，that is zero.

When we owe some money to others，it is a minus quantity to us.

Remember to put a minus before the quantity of a negative charge.

A number with a plus before it is larger than zero，it is smaller than zero when with a minus before it.

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