解题思路:(1)先算乘法,再算减法;
(2)根据乘法交换律和结合律进行简算;
(3)先算加法,再算乘法;
(4)按照从左向右的顺序进行计算;
(5)按照从左向右的顺序进行计算;
(6)根据乘法分配律进行简算.
(1)19-2.3×3.6,
=19-8.28,
=10.72;
(2)0.125×2.5×8×0.4,
=(0.125×8)×(2.5×0.4),
=1×1,
=1;
(3)(18.02+12.58)×1.3,
=30.6×1.3,
=39.78;
(4)42.3÷0.09×1.8,
=470×1.8,
=846;
(5)0.35÷0.25×4,
=1.4×4,
=5.6;
(6)9.06×10.1-0.1×9.06,
=9.06×(10.1-0.1),
=9.06×10,
=90.6.
点评:
本题考点: 小数四则混合运算;运算定律与简便运算.
考点点评: 考查了运算定律与简便运算,四则混合运算.注意运算顺序和运算法则,灵活运用所学的运算律简便计算.