do one's sums (English, verb)
expansion: do one's sums (third-person singular simple present does one's sums, present participle doing one's sums, simple past did one's sums, past participle done one's sums)
Senses:
glosses: To figure out whether one can afford to pay for something.
tags: UK
informal
Forms:
form: does one's sums
tags: present
singular
third-person
form: doing one's sums
tags: participle
present
form: did one's sums
tags: past
form: done one's sums
tags: participle
past