數(shù)學(xué)公式數(shù)學(xué)公式=4-4×數(shù)學(xué)公式=數(shù)學(xué)公式+2.6+數(shù)學(xué)公式=
1-數(shù)學(xué)公式-3÷3=(0.18+數(shù)學(xué)公式)÷9=

解:=,4-4×=3,+2.6+=3.6,
1--3÷3=-,(0.18+)÷9=0.12.

故答案為:1:2,3,3.6,,0.12.


分析:把求比值,前項除以后項即可;對于四則混合運算題,按照混合運算的順序進(jìn)行計算,能簡算的要簡算.
點評:此題考查看算式直接寫得數(shù),對于四則混合運算題,能簡算要簡算;不能簡算的,有括號時,要按照先算括號里面的,再算括號外面的;沒有括號時,要按照先算乘除法,再算加減法的順序進(jìn)行計算.
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