问题 解答题
请用简便方法计算下面各题
245-65-35
186+82+1825×(4×27)
8×(25+20)24×56+44×245.78+0.32+0.68.
答案

(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)5.78+0.32+0.68,

=5.78+(0.32+0.68),

=5.78+1,

=6.78.

单项选择题
单项选择题