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0.175÷0.25×40.175÷0.25÷0.4200÷[(172-72)÷25]630×[840÷(240-212)].

题目详情
0.175÷0.25×4
0.175÷0.25÷0.4
200÷[(172-72)÷25]
630×[840÷(240-212)].
▼优质解答
答案和解析
(1)0.175÷0.25×4
=0.7×4
=2.8;

(2)0.175÷0.25÷0.4
=0.175÷(0.25×0.4)
=0.175÷0.1
=1.75;

(3)200÷[(172-72)÷25]
=200÷[100÷25]
=200÷4
=50;

(4)630×[840÷(240-212)]
=630×[840÷28]
=630×30
=18900.