Analysis: According to the conversion of time, 1 hour =60 minutes, 1 minute =60 seconds, and then calculate by multiplication and division.

The formula is:

1、2×60= 120

2, 100÷60= 1 divided by 40.

Note: 1 is 1 hour, and the remainder 40 is 40 minutes.

Extended data:

Conversion of time units:

One hour is generally equal to 3600 seconds, or 60 minutes, or 1/24 days. "H" is often used in English or mathematics.

The hour is not the basic unit of the international system of time units (the basic unit of the international system of time units is seconds), but an auxiliary unit of time coordinated with the basic unit of the international system of units.

Minutes are units of time measurement. Minute is English, which means "tiny" and also means min. Engraving = 15 minutes, word =5 minutes (usage in southern Fujian and Guangdong).