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¿µ¾î·Î ½ÃÀÛÇÏ´Â ¼öÇÐ µ¿È­ º¸³Ê½ºÆí

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  • 2011-08-17
41

 

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©, È­¾Ïµ¿±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¿ªÇѰÅÁÒ.

ÀÚ¿¬¼ö¶õ 1ºÎÅÍ ½ÃÀÛÇØ¼­ 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.

 

  

 

 

 

 

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