一个体积是1立方分米的物体,底面积一定是1平方分米。( )
()
(80-9.8)×-1.32 =70.2×-1.32 =28.08-1.32 =26.76()
18.1+(3-0.299÷0.23)×1 =18.1+1.6×1 =18.1+1.6 =19.7()
(1÷1-1)÷5.1 =(1-1)÷5.1 =0÷5.1 =0()
14.8×6.3-6.3×6.5+8.3×3.7 =(14.8-6.5)×6.3+8.3×3.7 ="8.3×6.3+8.3×3.7" 8.3×(6.3+3.7) =8.3×10 =83()