问题
解答题
计算.
3.8+5.6÷0.7×4
[7.6-(1.8+0.28)]×1.5
520-13.5×6.
答案
(1)3.8+5.6÷0.7×4,
=3.8+8×4,
=3.8+32,
=35.8;
(2)[7.6-(1.8+0.28)]×1.5,
=(7.6-2.08)×1.5,
=9.68×1.5,
=14.52;
(3)520-13.5×6,
=520-81,
=439.
计算.
3.8+5.6÷0.7×4
[7.6-(1.8+0.28)]×1.5
520-13.5×6.
(1)3.8+5.6÷0.7×4,
=3.8+8×4,
=3.8+32,
=35.8;
(2)[7.6-(1.8+0.28)]×1.5,
=(7.6-2.08)×1.5,
=9.68×1.5,
=14.52;
(3)520-13.5×6,
=520-81,
=439.