问题
解答题
用递等式计算.
(1)214.6-(3.05+7.1)×1.8
(2)(2.44-1.8)÷0.4×23.
答案
(1)214.6-(3.05+7.1)×1.8,
=214.6-10.15×1.8,
=214.6-18.27,
=196.33;
(2)(2.44-1.8)÷0.4×23,
=0.64÷0.4×23,
=1.6×23,
=36.8.
用递等式计算.
(1)214.6-(3.05+7.1)×1.8
(2)(2.44-1.8)÷0.4×23.
(1)214.6-(3.05+7.1)×1.8,
=214.6-10.15×1.8,
=214.6-18.27,
=196.33;
(2)(2.44-1.8)÷0.4×23,
=0.64÷0.4×23,
=1.6×23,
=36.8.