下面每个小方格表示边长为一厘米的长方形，请你在方格纸上画出一个周长是14米正方形？ 下面每个小方格的边长表示1厘米．①画一个边长4厘米的正方形，...
\u4e0b\u9762\u65b9\u683c\u7eb8\u4e0a\u6bcf\u5c0f\u683c\u7684\u8fb9\u957f\u63091\u5398\u7c73\u8ba1\u7b97\uff0c\u5728\u65b9\u683c\u4e2d\u753b\u4e24\u4e2a\u5468\u957f12\u5398\u7c73\u7684\u957f\u65b9\u5f62\uff1b\u518d\u753b\u4e00\u4e2a\u5468\u957f\u662f12\u5398\u7c73\u7684\u6b63\u65b9\u89e3\u7b54\uff1a\u89e3\uff0c\u957f\u65b9\u5f62\u957f\u4e0e\u5bbd\u7684\u548c\u4e3a\uff1a12\u00f72=6\uff08\u5398\u7c73\uff09\uff0c\u957f\u65b9\u5f62\u7684\u957f\u4e0e\u5bbd\u53ef\u80fd\u4e3a\uff1a4\u548c2\uff0c5\u548c1\uff08\u7b54\u6848\u4e0d\u552f\u4e00\uff09\uff1b\u6b63\u65b9\u5f62\u7684\u8fb9\u957f\u4e3a\uff1a12\u00f74=3\uff08\u5398\u7c73\uff09
\u6b63\u65b9\u5f62\u7684\u8fb9\u957f\u662f4\u5398\u7c73\uff0c\u5468\u957f\u4e3a\uff1a4\u00d74=16\uff08\u5398\u7c73\uff09\uff0c\u9762\u79ef\u4e3a\uff1a4\u00d74=16\uff08\u5e73\u65b9\u5398\u7c73\uff09\uff1b16=2\u00d78\uff08\u5398\u7c73\uff09\uff1b\u957f\u65b9\u5f62\u7684\u957f\u662f8\u5398\u7c73\u5bbd\u662f2\u5398\u7c73\uff1b\uff08\u7b54\u6848\u4e0d\u552f\u4e00\uff09\uff1b\u957f\u65b9\u5f62\u7684\u5468\u957f\u4e3a\uff1a\uff082+8\uff09\u00d72=20\uff08\u5398\u7c73\uff09\uff0c\u56fe\u5982\u4e0b\uff1a\u6545\u7b54\u6848\u4e3a\uff1a16\u5398\u7c73\uff0c16\u5e73\u65b9\u5398\u7c73\uff0c20\u5398\u7c73\uff0e
周长14厘米的正方形，
边长=14÷4=3.5 厘米，
绛旓細姝ｆ柟褰㈢殑杈归暱鏄4鍘樼背锛屽懆闀夸负锛4脳4=16锛堝帢绫筹級锛岄潰绉负锛4脳4=16锛堝钩鏂瑰帢绫筹級锛16=2脳8锛堝帢绫筹級锛涢暱鏂瑰舰鐨勯暱鏄8鍘樼背瀹芥槸2鍘樼背锛涳紙绛旀涓嶅敮涓锛夛紱闀挎柟褰㈢殑鍛ㄩ暱涓猴細锛2+8锛壝2=20锛堝帢绫筹級锛屽浘濡備笅锛氭晠绛旀涓猴細16鍘樼背锛16骞虫柟鍘樼背锛20鍘樼背锛
绛旓細鐢诲嚭涓涓笌杩欎釜涓夎褰㈤潰绉浉绛夌殑骞宠鍥涜竟褰㈠涓嬪浘锛堝浘涓豢鑹查儴鍒嗭級锛氾紙4锛夋寜2锛1鏀惧ぇ鍚庣殑涓夎褰㈢殑搴曟槸6鏍硷紝楂樻槸8鏍硷紝6脳8梅2=24锛堝钩鏂鍘樼背锛夛紟鏁呯瓟妗堜负锛6锛屼笅锛6锛24锛
绛旓細姣忎釜灏忔柟鏍鐨杈归暱鏄1cm锛岃繖涓钩琛屽洓杈瑰舰鐨勯潰绉槸24骞虫柟鍘樼背銆傛秱鑹茬殑涓夎褰㈢殑闈㈢Н鏄12骞虫柟鍘樼背銆傚垎鏋愯繃绋嬪涓嬶細锛1锛変粠棰樼洰涓浘褰㈠彲鐭ワ紝杩欎釜骞宠鍥涜竟褰㈢殑闀挎槸6鍘樼背锛岄珮鏄4鍘樼背銆傦紙2锛夌敱骞宠鍥涜竟褰㈢殑闈㈢Н鍙緱锛氬钩琛屽洓杈瑰舰鐨勯潰绉=闀夸箻楂=6脳4=24骞虫柟鍘樼背銆傦紙3锛夌敱浜庢秱鑹茬殑涓夎褰㈡伆濂芥槸骞宠鍥涜竟褰㈢殑涓鍗...
绛旓細杈归暱=14梅4=3.5 鍘樼背锛
绛旓細鍥犱负闀挎柟褰㈠拰姝ｆ柟褰㈢殑鍛ㄩ暱閮芥槸12鍘樼背锛屾墍浠ラ暱鏂瑰舰鐨勯暱鍜屽鍙互涓轰负5鍘樼背鍜1鍘樼背锛屾鏂瑰舰鐨杈归暱涓3鍘樼背锛屼簬鏄綔鍥惧涓嬶細闀挎柟褰㈢殑闈㈢Н涓猴細5脳1=5锛堝钩鏂瑰帢绫筹級锛涙鏂瑰舰鐨勯潰绉负锛3脳3=9锛堝钩鏂瑰帢绫筹級锛涚瓟锛氶暱鏂瑰舰鐨勯潰绉槸5骞虫柟鍘樼背锛屾鏂瑰舰鐨勯潰绉负9骞虫柟鍘樼背锛...
绛旓細涓嬮潰鐨姣忎釜灏忔柟鏍閮琛ㄧず杈归暱1鍘樼背鐨勬鏂瑰舰銆 锛1锛夊湪鍥句腑鐢讳竴涓洿寰4鍘樼背鐨勫渾锛屽湪鐢讳竴涓崐寰3鍘樼背鐨勫渾銆傦紙2锛夊鏋滃湪鍥句腑鐢讳竴涓敖鍙兘澶х殑鍏冨鏋滃湪鍥句腑鐢讳竴涓敖鍙兘澶х殑鍦嗭紝杩欎釜鍦嗙殑鍗婂緞鏄紙5锛夊帢绫筹紝鐩村緞鏄紙10锛夊帢绫炽
绛旓細锛1锛夊鍥炬墍绀猴紝闀挎柟褰㈢殑闀垮拰瀹藉垎鍒负3鍘樼背鍜1鍘樼背锛屾褰㈢殑涓婂簳涓3鍘樼背锛屼笅搴曚负5鍘樼背锛岄珮涓2鍘樼背锛屽垯鍥惧舰鐨勯潰绉槸锛3脳1+锛3+5锛壝2梅2锛=3+8锛=11锛堝钩鏂瑰帢绫筹級锛涚瓟锛氬浘褰㈢殑闈㈢Н鏄11骞虫柟鍘樼背锛庯紙2锛変笁瑙掑舰鐨勯珮鏄8鍘樼背锛岄潰绉槸24骞虫柟鍘樼背锛屽垯涓夎褰㈢殑搴曟槸锛24脳2梅8=6锛堝帢绫筹級锛屾墍浠...
绛旓細灏嗗乏涓嬭鏂规牸涓殑鍦嗗姬绉昏嚦鍙抽潰涓棿鏂规牸涓傛濂芥槸涓涓崐寰涓1鍘樼背鍦嗙殑鍛ㄩ暱銆傛渶闀跨殑閭ｆ鍦嗗姬绛変簬鍗婂緞涓2鍘樼背鍦嗗懆闀跨殑鍥涘垎涔嬩竴銆傛牴鎹渾鍛ㄩ暱锛2蟺r銆傚彲璁＄畻鍑洪楀彿鐨勫懆闀匡細3.14脳1脳2锛3.14脳2脳2梅4 锛6.28锛3.14 锛9.42锛堝帢绫筹級闈㈢Н涓庡懆闀 濡傛灉浠ュ悓涓闈㈢Н鐨勪笁瑙掑舰鑰岃█锛屼互绛夎竟涓夎褰㈢殑鍛ㄧ晫鏈...
绛旓細閫氳繃鍥剧煡閬撹繖涓暱鏂逛綋鐨勯暱鏄4鍘樼背锛屽鏄2鍘樼背锛岄珮鏄3鍘樼背锛屽簳闈㈢Н锛4脳2=8锛堝钩鏂瑰帢绫筹級锛岃〃闈㈢Н锛氾紙4脳2+4脳3+2脳3锛壝2=26脳2=52锛堝钩鏂瑰帢绫筹級锛涗綋绉細4脳2脳3=24锛堢珛鏂瑰帢绫筹級锛涚瓟锛氳繖涓暱鏂逛綋鐨勫簳闈㈢Н鏄8骞虫柟鍘樼背锛岃〃闈㈢Н鏄52骞虫柟鍘樼背锛屼綋绉槸24绔嬫柟鍘樼背锛涙晠绛旀涓猴細8锛52锛24锛...
绛旓細涓涓暱鏂瑰舰鍜屼竴涓鏂瑰舰,浣垮緱瀹冧滑鐨勯潰绉箣姣鏄1:2:3,鎸夎繖鏍风殑椤哄簭锛屽彲浠ョ敾涓夎褰㈤潰绉负12,闀挎柟褰㈤潰绉负24锛屾鏂瑰舰闈㈢Н涓36锛屽洜涓夎褰㈤潰绉瓑浜庡簳*楂/2锛屽垯涓夎褰㈢殑搴曞拰楂樻槸3鍜8鎴4鍜6绛夋绫伙紝闀挎柟褰㈤潰绉瓑浜庨暱*瀹斤紝鍒欓暱鏂瑰舰鍜岄暱鍜屽灏辨槸3鍜8鎴4鍜6绛夋绫伙紝姝ｆ柟褰㈤潰绉瓑浜杈归暱*杈归暱锛...
