问题
解答题
计算,能用简便方法计算用简便方法.
|
答案
(1)17.5÷12.5×1.4,
=1.4×1.4,
=1.96;
(2)1.58×99+1.58,
=1.58×(99+1),
=1.58×100,
=158;
(3)19.44÷2.7÷4.8,
=7.2÷4.8,
=1.5.
计算,能用简便方法计算用简便方法.
|
(1)17.5÷12.5×1.4,
=1.4×1.4,
=1.96;
(2)1.58×99+1.58,
=1.58×(99+1),
=1.58×100,
=158;
(3)19.44÷2.7÷4.8,
=7.2÷4.8,
=1.5.