ÈÞ°¡ Àß ´Ù³à¿Ô¾î¿ä.
ºÎ»ê¿¡¼ °¿øµµ·Î °¡´Â ±æÀÌ Á¤¸» ¸Ö¾úÁö¸¸ ³Ê¹« ÁÁÀº °æÄ¡¿¡ Èûµç°Ô ½Ï °¡½Ã´õ¶ó±¸¿ä.
Çѹݵµ ÁöÇü º¸°í ÇÏÀÌ¿ø ¸®Á¶Æ®¿¡¼ °ïµ¹¶ó Ÿ°í ·¹¾Ë ¹ÙÀÌÅ©, Ⱦϵ¿±¼, »ï¾ç ´ë°ü·É ¸ñÀå °¬´Ù¿Ô¾î¿ä. °¿øµµ ¾È¿¡¼ À̵¿ÇÏ´Â ±æµµ ³Ê¹« ¸ÚÁö´õ¶ó±¸¿ä.
¾Ê°¡º» ºÐµé ²À °¡º¸¼¼¿ä.
¼öÇе¿È 1´Ü°è 6±Ç ³¡³ª°í 2´Ü°è µé¾î°¡±â Àü¿¡ ¼öÇÐ ÀÌ·Ð Á¶±Ý Á¤¸®ÇÒ±îÇÕ´Ï´Ù.
¸ÕÀú ¼ö¿¡ ´ëÇØ Á¤¸®ÇØ º¾½Ã´Ù.
Counting Numbers
The set of counting numbers, or natural numbers, begins with the number 1 and continues into infinity.
conting numbers´Â ¿ì¸®°¡ ¾Ë°í ÀÖ´Â ÀÚ¿¬¼ö ÀÔ´Ï´Ù. natural numbersÀ» ±×´ë·Î ¹ø¿ªÇÑ°ÅÁÒ.
ÀÚ¿¬¼ö¶õ 1ºÎÅÍ ½ÃÀÛÇؼ ¹«ÇÑ´ë·Î °è¼Ó ¼¿ ¼ö ÀÖ´Â ¼öÁÒ. (1, 2, 3, 4, 5, ...)
Whole Numbers
The set of whole numbers is the same as the set of counting numbers, except that it begins with 0.
¹üÀÚ¿¬¼ö¶ó°í ÇÕ´Ï´Ù. ÀÚ¿¬¼ö¿¡ 0¸¸ Ãß°¡°¡ µË´Ï´Ù. (0, 1, 2, 3, 4, 5, ...)
Rational Numbers
The set of rational numbers includes any number that can be written in the form of a fraction, as long as the denominator is not equal to 0.
0ÀÌ ¾Æ´Ñ ¼ö·Î ³ª´©¾îÁø ¼ö Áï ºÐ¼ö(fraction)·Î ³ªÅ¸³¾ ¼ö ÀÖ´Â À¯¸®¼ö¸¦ ¸»ÇÕ´Ï´Ù.
denominatorÀº ºÐ¸ð¸¦ ¸»ÇÕ´Ï´Ù. ºÐ¼ö¸¦ ³ªÅ¸³¾¶§ ºÐÀÚ/ºÐ¸ð·Î Ç¥½ÃÇÏÁÒ.
numeratorÀº ºÐÀÚ ÀÔ´Ï´Ù.
Prime Numbers
Prime numbers are counting numbers than can be divided evenly by only two numbers: 1 and themselves.
prime numberÀº ¿¹Àü¿¡ ¼Ú¼ö¶ó°í ¹è¿ü´Âµ¥ ¿äÁòÀº ¼Ò¼ö·Î Ç¥±â ÇÕ´Ï´Ù.
ÀÚ¿¬¼ö Áß¿¡¼ 1°ú ÀÚ±â ÀÚ½ÅÀ¸·Î ³ª´©¾î Áö´Â ¼ö Áï ÀÎÀÚ°¡ µÑÀÎ ¼ö¸¦ ¸»ÇÕ´Ï´Ù.
(2, 3, 5, 7, 11, 13, 17, 19, 23, 29, ...)
Composite Numbers
Composite numbers are all counting numbers that are not prime numbers. In order words, composite numbers are numbers that have more than two factors.
composite numberÀº ÇÕ¼º¼ö·Î ÀÎÀÚ°¡ µÑ º¸´Ù ¸¹Àº ¼ö¸¦ ¸»ÇÕ´Ï´Ù.
(4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, ...)
Even and Odd Numbers
Even numbers include the numbers 0 and 2 and all numbers that can be divided evenly by 2. Odd numbers are all numbers that cannot be divided evenly by 2.
evenÀº ¦¼ö odd´Â Ȧ¼ö¿¹¿ä. ±â¾ïÇϱâ ÁÁ°Ô ±ÛÀÚ ¼ö°¡ ¦¼ö, Ȧ¼ö·Î µÇ¾î ÀÖ¾î¿ä.
Integers
The set of integers includes 0, all of the counting numbers (called positive whole numbers), and the whole numbers less than 0 (called negative numbers).
integerÀº Á¤¼ö ÀÔ´Ï´Ù. oÀ» ±âÁØÀ¸·Î ¿À¸¥ÂÊÀº ¾çÀÇ Á¤¼ö Áï ¾ç¼ö, ¿ÞÂÊÀº À½ÀÇ Á¤¼ö Áï À½¼ö.
negative numbers positive numbers
-7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7
Absolute Value
Absolute value tells the distance of a positive or negative number from 0.
absolute value´Â Àý´ëÄ¡¸¦ ¸»ÇÕ´Ï´Ù. Á¤ÀÇ´Â 0¿¡¼ ¾ó¸¶³ª ¶³¾îÁ® ÀÖ´ÂÁö °Å¸®¸¦ ¸»ÇÕ´Ï´Ù. ±×·¡¼ Ç×»ó ¾ç¼ö·Î ³ª¿É´Ï´Ù. Àý´ëÄ¡ ±âÈ£ ±â¾ï ³ª½ÃÁÒ?
|-5| = 5
¸Ó¸®°¡ ¾ÆÇÁ½ÃÁÒ? »ý¼ÒÇÑ ¿ë¾îµé°ú ¿¹Àü¿¡ ¼öÇÐ ½Ã°£¿¡ µé¾îºÃ´ø ¿ë¾îµé ±â¾ïÀÌ °¡¹°°¡¹° ÇϽDz¨¿¹¿ä. ²À ±â¾ïÇÏ½Ã´Â°Ô ¾Æ´Ï°í ÇÊ¿äÇϽǶ§ »ç¿ëÇϼ¼¿ä.
±×·³ ±âÈ£µéµµ ¾Ë¾Æº¼±î¿ä?
+ plus, add ¡Â is less than or equal to
- minus, subtract : is compared to, ratio
¡¿ multiplied by, multiply ¡Ä infinity
¡À divided by, divide ¡Ð angle
= equal to ⊾ right angle
¡Á not equal to ¡Ñ perpendicular
≻ is greater than ¡« parallel to
≺ is less than ¡î square root
∅ or { } empty set ≈ or ≐ approximately
¡« absolute value ∷ proportion sign
¡Ã is greater than or equal to
Á» ¾î·Á¿ì½Ç²¨¿¹¿ä. Àç¹Ìµµ ¾ø°í ±×ÁÒ?
´ÙÀ½ ¼öÇе¿È 2´Ü°è ³¡³ª°í ¹Ì±¹ ÃÊµî ¼öÇÐ ±³°ú¼¿¡ ³ª¿À´Â ¿ë¾î¸¦ ´Ù½Ã Á¤¸®ÇØ µå¸±²²¿ä.
Âü°í·Î Àü ÀÌ Ã¥À» º¸°í µµ¿òÀÌ ¸¹ÀÌ µÇ¾ú¾î¿ä.