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脱式计算.0.175÷0.25÷0.4(7.5-2.3×0.4)÷0.011.2×0.25+2.8×0.25178.8÷(26.4-5.6)

题目详情
脱式计算.
0.175÷0.25÷0.4               
(7.5-2.3×0.4)÷0.01
1.2×0.25+2.8×0.25 
178.8÷(26.4-5.6)
▼优质解答
答案和解析
(1)0.175÷0.25÷0.4  
=0.175÷(0.25×0.4)
=0.175÷0.1
=1.75;
        
(2)(7.5-2.3×0.4)÷0.01
=(7.5-0.92)÷0.01
=6.58÷0.01
=658;

(3)1.2×0.25+2.8×0.25 
=(1.2+2.8)×0.25
=4×0.25
=1;

(1)178.8÷(26.4-5.6)
=178.8÷20.8
=8
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