解题思路:(1)根据连续减去两个数,等于减去这两个数的和简算;
(2)运用加法结合律简算;
(3)再运用乘法结合律简算;
(4)运用乘法分配律简算;
(5)运用乘法分配律简算;
(6)根据连续除以两个数,等于除以这两个数的积简算;
(1)245-65-35,
=245-(65+35),
=245-100,
=145;
(2)186+82+18,
=186+(82+18),
=186+100,
=286;
(3)25×(4×27),
=(25×4)×27,
=100×27,
=2700;
(4)8×(25+20),
=8×25+8×20,
=200+160,
=360;
(5)24×56+44×24,
=24×(56+44),
=24×100,
=2400;
(6)700÷4÷25,
=700÷(4×25),
=700÷100,
=7.
点评:
本题考点: 整数四则混合运算;运算定律与简便运算.
考点点评: 此题是考查四则混合运算,要仔细观察算式的特点,灵活运用一些定律进行简便计算.