Estimate
Definition
Give an approximate value using reasonable assumptions.
Explanation
Round numbers or use simple assumptions to get a result close to the true value. Show your reasoning.
Example
Estimate the number of seconds in a week.
In an exam
Command-word meanings can vary between subjects, exam boards and mark schemes, so check your own board's guidance. See Exam Command Words: What Each Instruction Asks For.
Common confusion
An estimate is not a random guess. It should be based on reasonable values.