分析:(1)、(3)、(4)、(6)算式運(yùn)用乘法的分配律進(jìn)行計(jì)算.(2)按照小數(shù)的同級(jí)運(yùn)算順序進(jìn)行計(jì)算,從左向右依次計(jì)算即可.(5)一個(gè)數(shù)連續(xù)除以兩個(gè)數(shù)可以用這個(gè)數(shù)除以兩個(gè)數(shù)的積.
解答:解:(1)1.25×2.5×0.8,
=(1.25×0.8)×2.5,
=1×2.5,
=2.5;
(2)32.64÷2.04×0.3,
=16×0.3,
=4.8;
(3)1.5×101-1.5,
=1.5×(101-1),
=1.5×100,
=150;
(4)10.1×7.8,
=(10+0.1)×7.8,
=10×7.8+0.1×7.8,
=78+0.78,
=78.78;
(5)13÷0.4÷2.5,
=13÷(0.4×2.5),
=13÷1,
=13,
(6)2.8×7.3+0.27×28,
=2.8×7.3+2.7×2.8,
=2.8×(7.3+2.7),
=2.8×10,
=28.
點(diǎn)評(píng):完成本題要注意分析式中數(shù)據(jù),運(yùn)用合適的簡(jiǎn)便方法計(jì)算.