分析:(1)先化為小數(shù),再計算即可;
(2)根據(jù)乘法分配律簡便計算;
(3)先化為小數(shù),再計算即可;
(4)根據(jù)乘法結(jié)合律簡便計算;
(5)先算乘除,再算加法;
(6)先算乘除,再算減法.
解答:解:(1)
+55%=0.8+0.55=1.35;
(2)26.5×20%+
×13.5,
=(26.5+13.5)×0.2,
=40×0.2,
=8;
(3)11.8-(
+30%),
=11.8-2.8,
=9;
(4)25×12.5×80%,
=25×(12.5×80%),
=25×10,
=250;
(5)35×10%+18.5÷50%,
=3.5+37,
=40.5;
(6)
×24-3.2÷25%,
=16-12.8,
=3.2.
點評:考查了百分?jǐn)?shù)的加減乘除運算,運算定律與簡便運算,關(guān)鍵是將分?jǐn)?shù),小數(shù),百分?jǐn)?shù)統(tǒng)一為一種形式.