人教版六年级上册数学分数乘法的简便计算练习题五姓名: 成绩:( - ) (7 - ) + 3838 615 16 23 56 59 59 16 - 6 - 6 21 613 75 613 25 712 512 32037 + - 335 34 12 34 25 57 49 57 24 ( + 7 ) 25 (5 - )625 35 16 231- + 12( + + ) 514 2125 12 64 46 724 5634(125 34) ( + )7 5 (24 + ) 417 15 37 83 124 78 + 0.4-25 (按运算顺序算)677 25 210 910 110( )12 1 2 34(2 ) 4164357341( + )72 4.253 (2 1 ) 6.62.51287456543212 635 (21 21)0.2563.5 2518697169734114 131243 57.125 0.5 2.5( + + + ) 872121910 910 910 910(21 21) 73412518697169