120 seconds is equal to 2 minutes, because the big hand of our clock is 1 hour, that is, 60 minutes, and the small hand is 6o seconds, that is, one minute. So 120 seconds is a small hand that moves two times on the clock dial equals two minutes.
Solution: Time unit conversion relationship: 1 hour =60 minutes, 1 minute =60 seconds,
⑴ According to the meaning of the question: 120 seconds ÷60 seconds =2 minutes,
(2) ∴120 seconds equals 2 minutes (120 seconds ÷60 seconds =60 seconds)
First of all, we have to clarify the concept of time and equal relationship, 1 minute is equal to 60 seconds, in turn, know 120 seconds, according to the formula, 120÷60=2, so 120 seconds is equal to 2 minutes.