问题
解答题
用简便方法计算
①7350÷25
②54×101
③227+364+146+173
④5604-(723+1604)
答案
①7350÷25,
=(7350×4)÷(25×4),
=29400÷100,
=294;
②54×101,
=54×100+54,
=5454;
③227+364+146+173,
=(227+173)+(364+146),
=400+510,
=910;
④5604-(723+1604),
=5604-1604-723,
=3277.