递等式计算(能简便的就简便)
递等式计算(能简便的就简便)
日期:2013-06-05 19:54:38 人气:1
您好:
1)8*17*1.25
=8x1.25x17
=10x17
=170
(2)350÷14+35*24
=25+70x12
=25+840
=865
(3)5.78-0.72-1.28
=5.78-2
=3.78
(4)(1/4+1/6-3/8)*24
=1/4x24+1/6x24-3/8x24
=6+4-9
=1
(5)1/3*(3/4+2/9)÷1/3