题目内容

看谁做得又对又快!
7.5×O.27+1.83    
4.32-1.36×1.5
140-7.2×5.4      
3.85+5.27×0.6.
分析:(1)(4)先算乘法,再算加法;
(2)(3)先算乘法,再算减法.
解答:解:(1)7.5×O.27+1.83
=2.025+1.83
=3.855;

(2)4.32-1.36×1.5
=4.32-2.04
=2.28;

(3)140-7.2×5.4
=140-38.88
=101.12;

(4)3.85+5.27×0.6
=3.85+3.162
=7.012.
点评:此题主要考查了小数四则混合运算的运算顺序和运算法则.
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