check and balance

balance out

To attain balance through the contrasting or reciprocating effect of different elements.

balance the books

To add up all the debits and credits.

check is in the mail

A common excuse used by debtors to put off creditors.

check the math

To verify the source or accuracy of something.

check through

To permit someone to continue onward, e.g. through a security checkpoint, after verifying their identity, tickets, etc.

gut check

An honest, reflective appraisal of one's true feelings concerning a matter of concern.

hang in the balance

To be in a precarious situation, unsure of the future.

reality check

A wake-up call; a reminder.