分析:(1)(3)從左往右依次運(yùn)算;
(2)先算括號(hào)內(nèi)的,再算括號(hào)外的;
(4)運(yùn)用乘法分配律簡(jiǎn)算;
(5)把32看作4×,運(yùn)用乘法結(jié)合律簡(jiǎn)算;
(6)調(diào)整運(yùn)算順序,先算除法,再算乘法,使計(jì)算簡(jiǎn)便.
解答:解:(1)24.5÷0.05×3.2
=490×3.2
=1568;
(2)55÷(3.26+6.74)
=55÷10
=5.5;
(3)4.8÷0.16÷0.3
=30÷0.3
=100;
(4)9.65×99+9.65
=9.65×(99+1)
=9.65×100
=965;
(5)0.25×32×1.25
=0.25×4×8×1.25
=(0.25×4)×(8×1.25)
=1×10
=10;
(6)1.48×0.58÷0.74
=1.48÷0.74×0.58
=2×0.58
=1.16.
點(diǎn)評(píng):仔細(xì)觀察數(shù)字特點(diǎn),注意運(yùn)算順序和運(yùn)算法則,運(yùn)用運(yùn)算定律或運(yùn)算技巧,進(jìn)行簡(jiǎn)便計(jì)算.