常用除法分数小数换算表.doc

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1、__________________________________________________常用除法、比、分数换算表除不尽的以及能除尽但商为多位小数的除法、分数只保留3位小数（按四舍五入计）除法比分数小数百分除法比分数小数百分1÷21:21/20.550%1÷31:31/3≈0.333≈33%1÷41:41/40.2525%1÷51:51/50.220%1÷61:61/6≈0.167≈17%1÷71:71/7≈0.143≈14%1÷81:81/80.12512.5%1÷91:91/9≈0.11111%1÷101:101/100.110%2÷32:32/3≈0.67≈67%2÷52:52

2、/50.440%2÷72:72/7≈0.286≈29%2÷92:92/9≈0.222≈22%3÷23:23/21.5150%3÷43:43/40.7575%3÷53:53/50.660%3÷73:73/7≈0.429≈43%3÷83:83/80.37537.5%3÷103:103/100.330%4÷34:34/3≈≈____________________________________________________________________________________________________1.333133%4÷54:54/50.880%4÷74:74/7≈0.5715

3、7%4÷94:94/9≈0.444≈44%5÷25:25/22.5250%5÷35:35/3≈1.667≈167%5÷45:45/41.25125%5÷65:65/6≈0.833≈83%5÷75:75/7≈0.71471%5÷85:85/80.62562.5%5÷95:95/90.55656%6÷56:56/51.2120%6÷76:76/7≈0.85786%7÷27:27/23.5350%7÷37:37/3≈2.333233%7÷47:47/41.75175%7÷57:57/51.4140%7÷67:67/61.167117%7÷87:87/80.87587.5%7÷97:97/9≈0.77

4、8≈78%7÷107:107/100.770%8÷38:38/3≈2.667≈267%8÷58:58/51.6160%____________________________________________________________________________________________________8÷78:78/7≈1.143≈143%8÷98:98/9≈0.89≈89%9÷29:29/24.5450%9÷49:49/42.25225%9÷59:59/51.8180%9÷79:79/7≈1.286≈129%9÷89:89/81.125≈113%9÷109:109/100.9

5、90%__________________________________________________