无
*注意事项:
6÷ = 19÷ = - = × =
0.37+1.6= 4.8÷0.8= 1+8%= 2.5÷1.25=
0÷ = -=
①18.4-2.7+1.6-0.3
②( + - )×42
③ -
④4.28×7.75+0.428×22.5
⑤( + )÷ +
⑥3.6÷[0.6×(0.8+0.7)]
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