1
8
×
3
5
-0.125×0.5
3.2+(9.2-3.8)÷
1
2
17.6-8.2-2.8
1
9
+
1
8
÷
3
4
+
8
9
1
3
+0.2)×
7
8
÷(3-0.5)
97×
95
98
分析:根據(jù)四則混算的運(yùn)算順序,仔細(xì)審題,選擇恰當(dāng)?shù)倪\(yùn)用運(yùn)算定律進(jìn)行簡(jiǎn)算.
解答:解:①
    1
    8
    ×
    3
    5
    -0.125×0.5,=0.125×0.6-0.125×0.5,
    =0.125×(0.6-0.5),
    =0.125×0.1,
    =0.0125;

    ②3.2+(9.2-3.8)÷
    1
    2
    ,
    =3.2+5.4×2,
    =3.2+10.8,
    =14;

    ③17.6-8.2-2.8,
    =17.6-(8.2+2.8),
    =17.6-11,
    =6.6;

    1
    9
    +
    1
    8
    ÷
    3
    4
    +
    8
    9
    ,
    =
    1
    9
    +
    1
    8
    ×
    4
    3
    +
    8
    9
    ,
    =(
    1
    9
    +
    8
    9
    )+
    1
    6
    ,
    =1+
    1
    6
    ,
    =1
    1
    6


    ⑤(
    1
    3
    +0.2)×
    7
    8
    ÷(3-0.5),
    =(
    1
    3
    +
    1
    5
    )×
    7
    8
    ÷2.5,
    =
    8
    15
    ×
    7
    8
    ×
    2
    5
    ,
    =
    14
    75
    ;

    ⑥97×
    95
    98

    =(98-1)×
    95
    98
    ,
    =98×
    95
    98
    -
    95
    98

    =95-
    95
    98
    ,
    =94
    3
    98
    點(diǎn)評(píng):根據(jù)運(yùn)算順序計(jì)算,巧妙運(yùn)用定律進(jìn)行簡(jiǎn)算.
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