分析:(1)根據(jù)小數(shù)乘法的計(jì)算方法進(jìn)行計(jì)算,
(2)根據(jù)小數(shù)減法的計(jì)算方法進(jìn)行計(jì)算,
(3)根據(jù)一個(gè)數(shù)減去兩個(gè)數(shù)的和等于分別減去這兩個(gè)數(shù)進(jìn)行計(jì)算,
(4)根據(jù)小數(shù)除法的計(jì)算方法進(jìn)行計(jì)算,
(5)根據(jù)分?jǐn)?shù)除法的計(jì)算方法進(jìn)行計(jì)算,
(6)根據(jù)分?jǐn)?shù)加法的計(jì)算方法進(jìn)行計(jì)算,
(7)先把小數(shù)化成分?jǐn)?shù),再根據(jù)分?jǐn)?shù)減法的計(jì)算方法進(jìn)行計(jì)算,
(8)根據(jù)乘法分配律進(jìn)行計(jì)算,
(9)從左到右依次進(jìn)行計(jì)算,
(10)先算除,再算加.
解答:
解:91)350×0.2=70 |
(2)8-0.09=7.91 |
(3)10.45-(0.45+2.8)=7.2 |
(4)42÷0.4=105 |
(5)36÷=48 |
(6)+= |
(7)0.2-= |
(8)(3+)×5=17 |
(9)1÷×= |
(10)+÷=1 |
點(diǎn)評(píng):本題綜合考查了學(xué)生的計(jì)算能力,注意計(jì)算結(jié)果的準(zhǔn)確性.