无
*注意事项:
0.5+0.8= 3.5×0.4= 8.4÷4 = 2.5+6.5= 0.6×1.5=
4.2÷0.21= 25÷2.5= 3.4×0.2 = 6.07-3.06= 3.4+5.8+6.6=
①3.8+4.29+4.2
②5.5×17.3+6.7×5.5
③2.33×0.5×4
④2.73×99
①5x-17=23
②0.5x÷20=16
③8(x-6.2)=41.6
④42x+25x=134
A’( ) B’( ) C’( )
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