Question

908×501-[731×1389-（547×236+842×731-495×361）]=________

Answer 1

5448
分析：去括号，分步使用分配律进行计算．
解答：原式=908×501-731×1389+（547×236+842×731-495×361）
=908×501-731×1389+547×236+842×731-495×361
=908×501-731×（1389-842）+547×236-495×361
=908×501-731×547+547×236-495×361
=908×501-（731-236）×547-495×361
=908×501-495×547-495×361
=908×501-495×（547+361）
=908×501-495×908
=908×（501-495）
=908×6
=5448．
故本题答案为：5448．
点评：本题考查的是有理数的运算．注意先去括号，观察算式的特点，灵活使用运算律．