七年级数学有理数混合运算练习 一、计算题 1 .计算. (1 )3351 (1)()4862 4 (2 )3221113()( 2 )(2 )()( 3 )()222 (3 )2 41 9( 5 )2 5 (4 )43510 .712( 1 5 )0 .7( 1 5 )9494 (5 )2111315()1( 2 )( 5 )2231 14 (6 )31 0 02111132( 2 )()( 1 )3( 3 )82 2 .计算. (1 )50 .7 50 .34 . (2 )34 97312 21 . (3 )11150 .61 .7 5232 . (4 )37771 481 28 . 3 .计算 (1 )451211762 1. (2 )148 12649 . (3 ) 1111134566 0 . 4 .用简便方法计算 (1 ) 11 .2 54822 0 . (2 )532 .465 . (3 )312 4 61 014313 . (4) 181201250.0012 . (5)513160522 . (6)341000.70.03105. (7)1314414. 5.计算 (1)14813 41()1139 . (2)453251 . (3) 157136918 . 6.计算下列各题 (1) 5.33.22.55.7 (2)11115134.522552 (3)311176.2580.7522424 . 7.计算下列各题. (1)23113( )()0425 21171[21 (37 )3 ]73222 (2)254[4()( 0.4)()]31425 10911(0.1258 )5 8.计算 (1)222183 ( 2)( 6)()3 (2)221124[ ( 5)( )0.8]5255 (3)3223731( 25)( 1 )()()( 0.1)940.1 ...