18.6+1.4= 30-12⼀19= 12÷30= 6⼀7×24= 0.125÷1⼀8=

2024-12-28 05:03:56
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回答1:

18.4+1.4=19.8
30-12/19=17又7/19
12÷30=12/30=2/5
6/7x24=144/7=20又4/7
0.125÷1/8=0.125Ⅹ8=1