因数和倍数_2

1、?茐? 敬潃潬敬湯t? ?1?1敬 5 -?敬潃潃敬 -2 ?敬潬敬 ?r1lr1?r 2?l?1 ?r潬敬 ?敬潃敬l ?r?敬 :湯敬l ?敬r潬 ?敬敬潃敬潬潬橔 ?敬ll ?橔潃敬敬1 ?il?l t澬 ?敬潃敬潬潬橔 ?1 ?湯r1 湯敬l ?湯 ?橔潃敬l ?ril?l ?敬l敬澬敬潬r?1 ?橔敬1 3.情感目标：向大家渗透辩证唯物主义思想。 12?rl ?敬?敬l湯r ?敬敬潃敬?rl 湯敬l ?rl ?敬l ?l?ll?l ?敬?敬l 橔r ?敬? ?敬?敬l ?l?潬?1 ?湯rl34=1243=1226=1262=12112=12121=12 =26122?橔潃敬l 6

2、r潬l?l 12?敬 ?湯敬潃敬il橔l? ?敬l?l =261212r潬l?l2 ?敬 ?敬潃敬潬潬橔 橔橔2?橔潃敬l 6 r潬l?l 12?敬 ?湯敬潃敬il橔l? ?敬l?l6?敬 ?敬潃敬潬潬橔 . =341212r潬l?l 3t澬4?敬 ?敬潃敬潬潬橔3?橔潃敬l 4 r潬l?l 12?敬 ?湯敬潃敬il橔l? ?敬l?l03=0010=003=0010=0?r潬r1 ?l?l ?ii1 ?il橔l? t澬 ?敬潃敬潬潬橔 t湯敬?1 ?ri潃敬 rll敬?澬 ?l敬?敬? ?橔1敬l?潬 ?敬1敬敬il?l 橔llt?r1 ?ilil ?湯ar潬 ?敬l敬潬湯?.(0? ?1 橔

3、敬敬1 ?r1lr1)18?敬 ?湯敬潃敬il橔l? ?湯a敬潬r18 = 1 1818 = 2 918 = 3 618?敬 ?湯敬潃敬il橔l?:123189618?敬 ?湯敬潃敬il橔l? ?湯a敬潬r18 = 1 1818 = 2 918 = 3 618?敬 ?湯敬潃敬il橔l?1、2、3、9、6、18、?敬潬 2?敬 ?敬?敬湯敬潃敬潃敬潬潬橔 ?敬橔 ?敬潬?rlrl21=22=2423=624=82?敬 ?湯敬潃敬潃敬潬潬橔2，4，6，8，12?20 ?2kkha ?t? ?202? ?a20?t? 1?t? ?t0 ?a20?t? ?2 ?2kkha ?1? ?2?t0.?20

4、?2kkha ?t? ?202? ?22aat? ?2 ?2kkha ?1? ?t? ?t0 ?22aat? ?t? ?t?t? .?20 ?2kkha ?22aat? 12a?t0 ?2?t0.?敬?t澬?l ?潬r 湯ar潬 7?敬 ?敬潃敬潬潬橔 ?敬l?l141417172525777714147=7=2 217177=7=2 2 3 325257=7=3 3 4 477777=7=1111?敬潬 橔橔?7 敬 ?敬敬潃敬潬潬橔 ?敬潬1?rlrl141417172525777771=772=1474=28?敬敬 ?敬敬l?l? ?敬潃敬潬潬橔 ?敬ll(3?敬 ?敬潃敬潬潬橔)01

5、2457810 1113143691215湯敬l ?敬r潬 ?敬敬敬潃敬潬潬橔 ?r潬 ?敬潬橔 ?敬l?l?22aat? (?0?t? ) ?k ?t耀2?1a h2? ?t0 ?2? ?2k?2? ?22aat? (?a20?t?) ?k2耀2kt?2? ?2k? ?kt20 ?. ?0耀?0 ?t20 ?22aat? t?t tt?h? ?h?t0. .3636?2k ?220?t?6060?2k ?220?t?alrl1215182024303660105892 21 13 34 46 6128?敬 ?敬敬潃敬潬潬橔 湯橔l1橔 橔敬敬1 ?敬潃1 2 6 8 18 2 6 8 18 24 36 48 24 36 48 27 32 72 27 32 72 40 54 144 40 54 144湯橔 ?潬r ?敬湯ar潬 ?l橔l? t澬 ?敬潃敬潬潬橔 ?敬? 敬9敬?il橔l?敬潃敬潬潬橔(4? ?敬?）8419628103212481349=36 r茐?36 ?敬潃敬潬潬橔 ?9?il橔l? ?敬l?l36ha?t06?2k ?a20?t?48r潬l?l 6?敬 ?敬潃敬潬潬橔 ?敬l?l橔l 13r潬l?l4?敬 ?敬潃敬潬潬橔 ?敬l?l134=3 . 19?2k ?2?2?22aat? ?t?t18?27?36 ?2?hh? ?h