问题
解答题
(1)5.1÷0.17÷3
(2)1.25×1.05-0.05×1.25
(3)8÷[(40.75-9.5)×0.4]
(4)1.75×3.75÷0.175
(5)1.12×1.8+2.24×0.1.
答案
(1)5.1÷0.17÷3
=5.1÷(0.17×3)
=5.1÷0.51
=10;
(2)1.25×1.05-0.05×1.25
=1.25×(1.05-0.05)
=1.25×1
=1.25;
(3)8÷[(40.75-9.5)×0.4]
=8÷[31.25×0.4]
=8÷12.5
=0.64;
(4)1.75×3.75÷0.175
=(1.75÷0.175)×3.75
=10×3.75
=37.5;
(5)1.12×1.8+2.24×0.1
=1.12×2×0.9+2.24×0.1
=2.24×0.9+2.24×0.1
=2.24×(0.9+0.1)
=2.24×1
=2.24.