计算,能简算的要用简算.9-4.8÷6×0.52.16÷[64.8-(51.3-2.7×3](1.4×0.3+2.46)
1个回答

(1)9-4.8÷6×0.5,

=9-0.4,

=8.6;

(2)2.16÷[64.8-(51.3-2.7×3],

=2.16÷[64.8-(51.3-8.1],

=2.16÷[64.8-43.2],

=2.16÷21.6,

=0.1;

(3)(1.4×0.3+2.46)÷1.8,

=(0.42+2.46)÷1.8,

=2.88÷1.8,

=1.6;

(4)(2.5÷2+2÷2.5)×0.4,

=(1.25+0.8)×0.4,

=2.05×0.4,

=0.82;

(5)3.71+3.71×17.4-8.4×3.71,

=(1+17.4-8.4)×3.71,

=10×3.71,

=37.1;

(6)1.2+8.8×1.25,

=1.2+(8+0.8)×1.25,

=1.2+8×1.25+0.8×1.25,

=1.2+10+1,

=12.2.