脱式计算. 0.25×+2.5%9.6-11÷7+×4325+75×.
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解:(1)0.25×+2.5%,
=+2.5%,
=0.2+0.025,
=0.225;
(2)9.6-11÷7+×4,
=9.6-11×+×4,
=9.6-(11×-×4),
=9.6-[×(11-4)],
=9.6-×7,
=9.6-1,
=8.6;(3)325+75×,
=325+30÷,
=325+70,
=395.
解析分析:(1)先算乘法,再算加法;(2)先算除法和乘法,再算减法;(3)先算除法和乘法,再算加法.
点评:此题是考查四则混合运算,要仔细观察算式的特点,灵活运用一些定律进行简便计算.