ä¸ã 填空ï¼3Ã4ï¼12åï¼
ãã1ãæ ¹æ®åä¸ä¸ªæ°çè§å¾ï¼ååºåä¸ä¸ªæ°ï¼
ãã2345ãã 3452ãã 4523ãã ï¼ãã ï¼
ãã2ãç¨ä¸ä¸ªå®å
¨ä¸æ ·çæ£æ¹ä½ï¼æ¼æä¸ä¸ªé¿æ¹ä½ï¼é¿æ¹ä½ç表é¢ç§¯æ¯70å¹³æ¹åç±³ï¼åæ¥ä¸ä¸ªæ£æ¹ä½ç表é¢ç§¯æ¯ï¼ãã ï¼å¹³æ¹åç±³ã
ãã3ãå¦æ Ã2008= ï¼Ïæç«ï¼åÏ=ï¼ãã ï¼ã
ãã4ã两æ¯ç²ç»ãé¿çé½ä¸åçè¡çï¼é¿çè½çç§7å°æ¶ï¼ççè½çç§10å°æ¶ï¼åç¹ç4å°æ¶åï¼ä¸¤åªè¡ççé¿åº¦ç¸åï¼è¥è®¾åæ¥é¿è¡ççé¿ä¸ºaï¼åæ¥çè¡ççé¿æ¯ï¼ãã ï¼ã
ããäºãå¤ææ£è¯¯ï¼2Ã5ï¼10åï¼ã
ãã1ãå¨76åé¢æ·»ä¸ä¸ä¸ªâ%âï¼è¿ä¸ªæ°å°±æ©å¤§100åããããããããï¼ãããã ï¼
ãã2ãå·¥ä½æ»éä¸å®ï¼å·¥ä½æçåå·¥ä½æ¶é´æåæ¯ä¾ãããããããã ï¼ãããã ï¼
ãã3ãç²è½¦é´çåºå¤çæ¯ä¹è½¦é´é«ï¼è¯´æç²è½¦é´äººæ°æ¯ä¹è½¦é´äººæ°å¤ã ï¼ãããã ï¼
ãã4ã两个èªç¶æ°ç积ä¸å®æ¯åæ°ãããããããããããããããã ï¼ãããã ï¼
ãã5ã1+2+3+â¦+2006çåæ¯å¥æ°ãããããããããããããããã ï¼ãããã ï¼
ããä¸ã计ç®ï¼3Ã3ï¼5ï¼5ï¼19åï¼ã
ãã1ãåå¼è®¡ç®ï¼
ããï¼1ï¼1.3ä¸ çåé¤ä»¥3ä¸ çå·®ï¼åæ¯å¤å°ï¼
ããï¼2ï¼å¨ä¸ä¸ªé¤æ³ç®å¼éï¼ååä½æ°é½æ¯5ï¼å¹¶ä¸è¢«é¤æ°ãé¤æ°ãååä½æ°çåæ¯81ã被é¤æ°ãé¤æ°åæ¯ä»ä¹æ°ï¼
ããï¼3ï¼ææ°ç æ¯1.2ç1 åå¤2.1ï¼è¿ä¸ªæ°æ¯å¤å°ï¼
ãã2ã
ãã3ã 2100-299-298-â¦-22-2-1
ããåãå¨ææä½ï¼æ¾è§å¾ï¼7Ã2ï¼14åï¼ã
ãã1ãæä¸ä¸ªè¾¹é¿ä¸º3åç±³ççè¾¹ä¸è§å½¢ï¼ç°å°å®æä¸å¾æ示æ»å¨ï¼è¯·é®Bç¹ä»å¼å§å°ç»æ
ããç»è¿ç路线çæ»é¿åº¦æ¯å¤å°åç±³ï¼
ãã ãããã
ãã2ãä»»æéæ©ä¸¤ä¸ªä¸åçæ°åï¼0é¤å¤ï¼ï¼ç¨å®ä»¬åå«ç»æ两个两ä½æ°ï¼ç¨å
¶ä¸ç大æ°åå»å°æ°ãåéæ°éæ©ä¸¤ä¸ªä¸ç¸åçæ°åï¼éå¤ä¸è¿°è¿ç¨ï¼è±¡è¿æ ·è¿ç»æä½äºæ¬¡ã
ããå¨æä½è¿ç¨ä¸ï¼ä½ åç°äºä»ä¹ï¼
第ä¸æ¬¡ â¡ï¼â¡ï¼â¡
第äºæ¬¡ â¡ï¼â¡ï¼â¡
第ä¸æ¬¡ â¡ï¼â¡ï¼â¡
第å次 â¡ï¼â¡ï¼â¡
第äºæ¬¡ â¡ï¼â¡ï¼â¡
ããæåç°äºï¼_____________________________________________________
ããå
ã综ååºç¨ï¼5Ã2ï¼6ï¼7Ã3ï¼37åï¼ã
ãã1ãå±±èå°å±±é¡¶æ24åç±³ãä¸ä¸ªäººä»¥æ¯å°æ¶4åç±³çé度ä¸å±±ï¼ä»ç«å³ä»åè·¯ä¸å±±ï¼å·²ç¥ä¸å±±åä¸å±±çå¹³åé度æ¯4.8åç±³ãè¿äººä¸å±±æ¯å°æ¶è¡å¤å°åç±³ï¼
ãã2ãç²ãä¹ä¸¤æ ¹ç»³åå
±é¿22ç±³ï¼ç²ç»³æªå» åï¼ä¹ç»³åç²ç»³çé¿åº¦æ¯æ¯3:2ï¼ç²ãä¹ä¸¤æ ¹ç»³åæ¥åé¿å¤å°ç±³ï¼
ãã3ãâäºä¸âèå°äºï¼æä¸ä¸ªå®¶åºåå«è®¡åå¤åºå»Bå°æ
游ãç²æ
è¡ç¤¾çæ¶è´¹æ åæ¯ï¼å¦æä¹°4å¼ å
¨ç¥¨ï¼åå
¶ä½äººæåä»·ä¼æ ï¼ä¹æ
è¡ç¤¾çæ¶è´¹æ åæ¯ï¼å®¶åºæ
游ç®å¢ä½ç¥¨ï¼æåä»·çä¸äºæä¼æ ãå·²ç¥è¿ä¸¤å®¶æ
è¡ç¤¾çå
¨ç¥¨ä»·æ ¼å为100å
ãè¯·ä½ ä¸ºä»¥ä¸ä¸ä¸ªå®¶åºéæ©è¾ä¸ºå®æ çæ
è¡ç¤¾ï¼å¹¶åå¼è®¡ç®æ¯ä¸ªå®¶åºè¯¥ä¸ºæ
游ä»çé± æ°ã
大人 å©å å计
å¼ å®¶ 4 3 7
æ家 6 4 10
ç家 3 1 4
ãã4ãæååæææ¬ä»·å¢å 25%ä»·æ ¼åºå®ï¼å 积åééä»·åºå®ï¼è¥æ¯ä»¶ååä»æ³çå©10%ï¼éå æåºå®ï¼
ãã5ãæå°æ¿åè¦å¶ä½ä¸æ¹æ£å
边形形ç¶çå°æ¿ç ï¼ä¸ºéåºå¸åºå¤æ ·åçéæ±ï¼è¦æ±å¨å°æ¿ç ä¸è®¾è®¡çå¾æ¡è½å¤ææ£å
边形6çåï¼è¯·ä½ 帮ä»ä»¬è®¾è®¡ç份æ¹æ¡ï¼è³å°è®¾è®¡ä¸ç§ï¼ã
ãã ã ã ã
ãã ã ã ã ãã
ãã6ãç°æå¦å¾æ示ç6ç§ç·ç ï¼è¯·ç¨å
¶ä¸ç4åç·ç ï¼å
许æç¸åçï¼ï¼è®¾è®¡åºç¾ä¸½çå¾æ¡ã
çæ¡:
ããä¸ã填空ã
ãã1ã5234
ãã2ã30ã
ãã解æï¼ä¸ä¸ªæ£æ¹ä½æ6个é¢ï¼ä¸ä¸ªæ£æ¹ä½æ18个é¢ï¼ä½æ¯ä¸ä¸ªæ£æ¹ä½æ¼æä¸ä¸ªé¿æ¹ä½æ¶ï¼åå°äºå个é¢ï¼è¿ä¸ªé¿æ¹ä½ç±åæ¥æ£æ¹ä½ç14个ç»æãè¿ä¸ªæ£æ¹ä½ æ¯ä¸ªé¢æ¯5ï¼70÷14ï¼å¹³æ¹åç±³ãåæ¥ä¸ä¸ªæ£æ¹ä½ç表é¢ç§¯æ¯30ï¼5Ã6ï¼å¹³æ¹åç±³ã
ãã70÷ï¼3Ã6ï¼4ï¼Ã6ï¼30ï¼å¹³æ¹åç±³ï¼
ãã3ã2006ã
ãã解æï¼ Ã2008ï¼ Ãï¼2007ï¼1ï¼ï¼ Ã2007ï¼ ï¼2006ï¼ ï¼æ以xï¼2006ã
ãã4ã ã
ãã
ããäºãå¤ææ£è¯¯ã
ãã1ãÃãã 2ãâãã 3ãÃãã 4ãÃãã 5ãâ
ããä¸ã计ç®ã
ãã1ã
ããï¼1ï¼0.9ï¼
ããï¼2ï¼é¤æ°ï¼[81ï¼5ï¼ï¼5ï¼5ï¼]÷ï¼1ï¼5ï¼=11ãã 被é¤æ°ï¼11Ã5ï¼5=60ï¼
ããï¼3ï¼8.1ï¼
ãã2ã
ããåæï¼å¦éåç¸å ï¼æ¬é¢é¾ä»¥è®¡ç®ï¼ä»ç»è§å¯ååæ¯ï¼
ããå¯åç°è½åæ + + + ï¼
ããèæ¯ä¸¤ä¸ªé¡ºæ¬¡ç¸å å¯å¾ Ãï¼1+ ï¼+ Ãï¼ + ï¼+ Ãï¼ + ï¼+ Ãï¼ + ï¼ï¼
ããè¿ä¸æ¥å¯å¾ + + + ï¼è¿èå¯åæï¼1- ï¼+ï¼ - ï¼+ï¼ - ï¼+ï¼ - ï¼ï¼æåç®åºç»æã
ããè§£ï¼ + + + + + + +
ãã= + + + + + + +
ãã= Ã +
ãã=
ãã=
ãã=ï¼1- ï¼+ï¼ - ï¼+ï¼ - ï¼+ï¼ - ï¼
ãã=1- =
ãã3ã
ããåæï¼
ããâµ2100=2Ã299=299+299
ããâ´2100-299=299
ããä¾æ¬¡ç±»æ¨
ãã299-298=2Ã298-298=298
ããâ¦â¦
ããâ´ 23-22=22
ãã22-2=2
ãã解ï¼2100-299-298-â¦-22-2-1
ãã=299-298-â¦-22-2-1
ãã=23-22-2-1
ãã=22-2-1=1
ããåãå¨ææä½ï¼æ¾è§å¾ã
ãã1ã3.14Ã3Ã2÷360Ã120Ã3ï¼18.84ï¼åç±³ï¼
ããå»ºè®®ä½ èªå·±äº²èªåä¸åï¼ççBçè¿å¨è·¯çº¿ãä½ å°±ä¼å¾å¥½äºè§£è¿é¢äºã
ãã2ãè§å¾ï¼æ¯ä¸æ¬¡çç»æé½æ¯ä¸¤ä¸ªæ°åå·®ç9åã
ããäºãå¾å½¢é¢ã
ãã解æï¼è®¾è¿ä¸ªæ£æ¹å½¢çè¾¹é¿ä¸º2xï¼å 为è¦æ¶åå°æ±åçé¢ç§¯ï¼æ以å°åçåå¾çä½ä¸ºxï¼åæ£æ¹å½¢çè¾¹é¿ä¸º2xãï¼ï¼ä¸¤ä¸ªååçé¢ç§¯åå»ä¸¤ä¸ªé´å½±é¨åçé¢ ç§¯ï¼æ£æ¹å½¢é¢ç§¯çä¸åãå¯ä»¥å°é´å½±é¨åçé¢ç§¯å¹³ååæ两åï¼åå«æ转移å¨å°å¦å¾çä½ç½®ãåå¼ä¸º3.14ÃxÃxï¼57Ã2ï¼2xÃ2x÷2ï¼xï¼10ï¼å æ£æ¹å½¢çè¾¹é¿ä¸º20åç±³ï¼è¿ä¸ªæ£æ¹å½¢çé¢ç§¯æ¯400å¹³æ¹åç±³ã
ãã
ããå
ã综ååºç¨ã
ãã1ã24÷[ï¼24Ã2ï¼Ã·4.8ï¼24÷4]=6ï¼åç±³ï¼
ãã2ã解ï¼
ããåæï¼
ããç²å©ä¸ï¼1- ï¼å 2份ï¼ç²åæ¥å 2÷ï¼1- ï¼=2.5ï¼åæ¥ä¹ä¸ç²çæ¯åºä¸º3:2.5ã
ããä¹ï¼22à =12ï¼ç±³ï¼ï¼ç²ï¼22à =10ï¼ç±³ï¼
ãã3ã
ããå¼ å®¶ï¼ç²æ¹æ¡ï¼4Ã100ï¼3Ã100Ã50ï¼
ï¼550ï¼å
ï¼
ããä¹æ¹æ¡ï¼7Ã100Ã75ï¼
ï¼525ï¼å
ï¼
ããæ以éç¨ä¹æ
è¡ç¤¾ãå¼ å®¶ä¸ºæ
游ä»525å
ã
ããæ家ï¼ç²æ¹æ¡ï¼4Ã100ï¼6Ã100Ã50ï¼
ï¼700ï¼å
ï¼
ããä¹æ¹æ¡ï¼10Ã100Ã75ï¼
ï¼750ï¼å
ï¼
ããæ以éç¨ç²æ
è¡ç¤¾ãæ家为æ
游ä»700å
ã
ããç家ï¼ç²æ¹æ¡ï¼4Ã100ï¼400ï¼å
ï¼
ããä¹æ¹æ¡ï¼4Ã100Ã75ï¼
ï¼300ï¼å
ï¼
ããæ以éç¨ä¹æ
è¡ç¤¾ãç家为æ
游ä»300å
ã
ãã4ã
ãã
ãã5ã
ããåæï¼æ¬é¢æ¯å¼æ¾å¼çä½å¾é¢ï¼çæ¡ä¸å¯ä¸ã
ãã
ãã6ã
ããåæï¼æ¬é¢æ¯å¼æ¾å¼çä½å¾é¢ï¼çæ¡ä¸å¯ä¸ãæ ¹æ®å¦ç设计å¾å½¢çç¾è§ãç¬åçæ¹é¢ç»åã
ããä¾å¦ï¼ ãã
ããç¶åå©ç¨ä½ 设计çå¾æ¡ï¼éè¿å¹³ç§»ï¼æ轴对称ï¼ææ转ï¼è®¾è®¡åºæ´å ç¾ä¸½ãæ´å 大åçå¾æ¡ã
ããéè¿å¹³ç§»å¾å°ï¼
ãã
ããéè¿è½´å¯¹ç§°å¾å°ï¼
温馨提示:答案为网友推荐,仅供参考