å£ç®ï¼1ã0.4+0.5Ã2= 2ã0.81-0.9Ã0.9= 3ã16.5-ï¼8.7-8.6ï¼= 4ã1.25Ã4-5Ã0.1= 5ã5.42+1.25Ã8=6ãï¼0.257-0.257ï¼Ã1.9= 7ã 9.8Ã0.1÷0.98= 8ã15.8Ãï¼0.87-0.77ï¼= 9ãï¼0.32+0.68ï¼Ã·0.2= 10ã5.4-2.5-1.4= 11ã 1.7+0.43+3.3= 12ã3.2Ã5-8= 13ã 53+100-99= 14ã58+99÷2= 15ã5.4+4.6÷0.2= 16ã1.9-8.1÷9= 17ãï¼5.8-3ï¼Ã·7= 18ã5.4-5.4Ã0.5= 19ã1.3-1.3÷1.3= 20ãï¼8.5-1.5ï¼Ã·0.7= 21ã 0Ã2558+99= 22ã0.09÷ï¼1-0.97ï¼= 23ã1.7-0.25-0.75= 24ã1.8Ã1-1.8= 25ã1.3Ã0.7= 26ã9.82+0.18= 27ã 3.04Ã10= 28ã 6.5÷100= 29ã1-0.36= 30ã 12÷0.4= 31ã 3.8-3.8Ã0= 32ã1.5+1.5÷3= 33ãï¼6.3-1.3ï¼Ã·0.5= 34ã5.4÷0.54= 35ã 9.6÷3= 36ã2.5Ã0.2Ã4= 37ã 4.84÷0.4= 38ã1÷4= 39ã5.4÷0.3÷18= 40ã0.23Ã3=41ã1-0.85= 42ã8.5÷0.5Ã10= 43ã 3.8÷0.19= 44ã 8.1÷0.27= 45ã61.3Ã0.01= 46ã 6.5÷0.13= 47ã 4.8÷0.08=48ã 61.3Ã0.01= 49ã6.5÷0.13= 50ã6-2.8÷2.8= ç®ç®ï¼1ã4.2÷56 2ã2.89Ã0.7÷289 3ã 36÷8÷0.5 4ã4.5÷0.125 5ã 32Ã1.25Ã25 6ã0.87Ã101-0.87 7ã15.2Ã99+15.2 8ã910Ã1.25+1.25Ã90 9ã0.25Ã437-0.25Ã37 10ã 31.45-3.75-5.25-1.45 11ã1.25Ã0.25Ã32 12ãï¼52+48ï¼Ã1008 13ã 53Ã8+9Ã53 14ã8.7Ã101-8.7 15ã 53Ã99-5316ã0.45Ã17-1/20÷1/17 17ã 30Ã8+3Ã50 18ã5Ã8+5Ã6 19ã 5Ã32-5Ã2 20ã5Ã99-5 åºç¨é¢ï¼1ãä¸è¾æ±½è½¦ä¸æ¬¡æå¤è½è¿è´§4.5å¨ï¼ç°æ20å¨è´§ï¼ç¨è¿è¾æ±½è½¦å 次è½è¿å®ï¼ 2ãæ¯å¥å¿ç«¥è£
ç¨å¸2.4ç±³ï¼50ç±³å¸å¯ä»¥åå¤å°å¥ç«¥è£
ï¼ 3ãå°æä»ä¸æ¥¼å°å楼è¦ç¨1.2åéï¼ç¨åæ ·çé度ä»ä¸æ¥¼å°å
«æ¥¼è¦ç¨å¤å°åéï¼ 4ãä¿®ä¸æ¡è·¯ï¼è®¡åæèµ8.4ä¸å
ï¼æ¯å®é
æèµç1.2åï¼å®é
æèµå¤å°ä¸å
ï¼ 5ã ä¸åç«è½¦0.6å°æ¶è¡é©¶38.7åç±³ï¼ç¨åæ ·çé度è¡é©¶258åç±³ï¼éè¦å¤å°å°æ¶ï¼ 6ã ä¸åé»æ¿å®½0.98ç±³ï¼é¿æ¯å®½ç2.5åï¼è¿åé»æ¿çé¢ç§¯æ¯å¤å°å¹³æ¹ç±³ï¼ 7ãä¸ä¸ªä¿®è·¯éä¿®ä¸æ¡è·¯ï¼è®¡åæ¯å¤©ä¿®62.5ç±³ï¼20天å¯ä»¥ä¿®å®ï¼å®é
ä¿®å®åªç¨äº12.5天ï¼å®é
æ¯å¤©ä¿®è·¯å¤å°ç±³ï¼ 8ã 40æ ¹è·³ç»³å10个å°ç®çå
±120å
ï¼30æ ¹è·³ç»³å10个å°ç®çå
±95å
ï¼ä¸æ ¹è·³ç»³å¤å°å
é±ï¼ 9ãä¿®ä¸æ¡é¿6.4åç±³çå
¬è·¯ï¼å3个æå¹³åæ¯æä¿®1.2åç±³ï¼å©ä¸çè¦2个æä¿®ç©ãè¿2个æå¹³åæ¯æä¿®å¤å°åç±³ï¼ 10ãä¿®ä¸æ¡é¿6.4åç±³çå
¬è·¯ï¼å3个æå¹³åæ¯æä¿®1.2åç±³ï¼ä½ä¸çæ¯æä¿®0.2åç±³ãè¿è¦å 个ææè½ä¿®å®ï¼æ¹ç¨ï¼1ï¼48-4x=x18 ï¼2ï¼5x+25Ã7=250 ï¼3ï¼2x-0.5Ã3=0.3 (4)1.7x-(22-5)=0 (5)0.1Ã72-1.2x=0.6 ï¼6ï¼8x-0.6=9.4Ã2 ï¼7ï¼5x-x+14=20 ï¼8ï¼x-0.64x=36 (9) 4(2x-0.8x)=16.8 (10)16x+4x+2x=264
温馨提示:答案为网友推荐,仅供参考