1第二章 有理数及其运算 计算能力提升训练题四四、有理数除法:1. 18(3) 2. (24)6 3. (57)(3) 4.( ) 5.(42)(6)5326.(+ )( ) 7. ( )9 215731398. 0.25( ) 9. 36(1 )( )81 313210. (1)(4) 11. 3( )( ) 74769712.0(3 )(7) 13. 3( ) 41 31414.(24 )(6)2(518) 7 1815. 1 (3)( ) 16. ( )( ) 318714383217.( )( ) 18.( + )( ) 438765298344319. 3.5 ( 0.5) 61732120. 1 (1 )1 (7) 72658321. ( ) 563124522. (2 ) 4 75575123523. 0.8 +4.8( )2.2 +0.812727319