Basic Math 2
Although the arithmetic words are important, let’s move back to something a little more advanced, and a little more interesting.
æ£ã®æ•° – ã›ã„ã®ã™ã† – positive number
è² ã®æ•° – ãµã®ã™ã† – negative number
æ•°ã®ç¬¦å· – ã™ã†ã®ãµã”ㆠ– number sign
è² ã®ç¬¦å· – ãµã®ãµã”ㆠ– negative sign
æ£ã®ç¬¦å·- ã›ã„ã®ãµã”ㆠ– positive sign
0より大ãã„æ•°ã‚’æ£ã®æ•°ã¨è¨€ã„ã¾ã™ã€‚
0よりãŠãŠãã„ã™ã†ã‚’ã›ã„ã®ã™ã†ã¨ã„ã„ã¾ã™ã€‚
A number larger than 0 is called a positive number.
0よりå°ã•ã„æ•°ã‚’è² ã®æ•°ã¨è¨€ã„ã¾ã™ã€‚
0よるã¡ã„ã•ã„ã™ã†ã‚’ãµã®ã™ã†ã¨ã„ã„ã¾ã™ã€‚
A number smaller than 0 is called a negative number.
è² ã®æ•°ã¯ã€è² ã®ç¬¦å·ãƒ¼ã‚’ã¤ã‘ã¦è¡¨ã™ã€‚
ãµã®ã™ã†ã¯ã€ãµã®ãµã”ã†ãƒ¼ã‚’ã¤ã‘ã¦ã‚らã‚ã™ã€‚
A negative number is shown with a negative sign, ー.
æ£ã®æ•°ã¯ã€æ£ã®ç¬¦å·+ã‚’ã¤ã‘ã¦è¡¨ã™ã€‚
ã›ã„ã®ã™ã†ã¯ã€ã›ã„ã®ãµã”ã†+ã‚’ã¤ã‘ã¦ã‚らã‚ã™ã€‚
A positive number is shown with a positive sign, +.
0ã¯ã€æ£ã®æ•°ã§ã‚‚è² ã®æ•°ã§ã‚‚ã‚ã‚Šã¾ã›ã‚“。
0ã¯ã€ã›ã„ã®ã™ã†ã§ã‚‚ãµã®ã™ã†ã§ã‚‚ã‚ã‚Šã¾ã›ã‚“。
0 is neither a positive nor a negative number.
Relevant links:
http://ja.wikipedia.org/wiki/æ£ã®æ•°ã¨è² ã®æ•°