解题思路:①按照从左到右的顺序计算;
②先算除法,再算减法;
③先算除法,再算减法,最后算加法;
④先把4.4分解成4×1.1,再运用乘法结合律简算,最后算加法.
①1.08×0.8÷0.27,
=0.864÷0.27,
=3.2;
②9.07-22.78÷3.4,
=9.07-6.7,
=2.37;
③20.88÷0.8-12.9+1.1,
=26.1-12.9+1.1,
=13.2+1.1,
=14.2;
④0.75+0.25×4.4,
=0.75+0.25×4×1.1,
=0.75+1×1.1,
=0.75+1.1,
=1.85.
点评:
本题考点: 小数四则混合运算.
考点点评: 本题考查了简单的四则混合运算,关键是理清楚运算的顺序,然后根据运算顺序逐步求解即可.