分析:(1)根據(jù)加法交換律和結(jié)合律進(jìn)行簡(jiǎn)算即可;
(2)先計(jì)算小括號(hào)里面的減法,再計(jì)算除法;
(3)連續(xù)減去17.83與2.17,等于減去17.83與2.17的和;
(4)根據(jù)乘法分配律進(jìn)行簡(jiǎn)算;
(5)先計(jì)算小括號(hào)里面的減法和加法,再計(jì)算除法;
(6)先計(jì)算小括號(hào)里面的加法,再計(jì)算中括號(hào)里面的除法,最后計(jì)算括號(hào)外面的除法.
解答:解:(1)3.67+18.5+6.33,
=(3.67+6.33)+18.5,
=10+18.5,
=28.5;
(2)(6.4-4.6)÷0.2,
=1.8÷0.2,
=9;
(3)120-17.83-2.17,
=120-17.83-2.17,
=120-(17.83+2.17),
=120-20,
=100;
(4)
(++)×24,
=
×24+×24+×24,
=8+4+9,
=21;
(5)
(-)÷(1+),
=
÷
,
=
;
(6)
[÷(+)]÷,
=
[÷]÷,
=
÷,
=4.
點(diǎn)評(píng):根據(jù)小數(shù)與分?jǐn)?shù)的混合運(yùn)算的順序進(jìn)行計(jì)算即可;能簡(jiǎn)算的要簡(jiǎn)算.