Question

﹙1﹚5.6×0.375+3/8×5.4-0.375×0.9简便计算 ﹙2﹚325×0.36+6.75×36 ﹙3﹚18又2/3-4.59-6.41-1又1/3

﹙4﹚10又1/6-﹙11/4÷11/8+2/3×1又1/4﹚

Answer 1

(1)原式=5.6×3/8+3/8×5.4-3/8×0.9
=(5.6+5.4－9/10)×0.375
=10.1×0.375
=(10+0.1)×0.375
=3.75+0.0375=3.7875
(2)原式=3.25×36+6.75×36=(3.25+6.75)×36=10×36=360
(3)原式=18又2/3-1又1/3(-4.59+6.4)=17又1/3－10=7又1/3
（4）原式=10又1/6－（11/4× 8/11+2/3×5/4)=10又1/6－(2+5/6)=10又1/6－2又5/6=7又1/3

Answer 2

(1)原式=（5.6+5.4-0.9）*0.375=3.75+0.0375=3.7875
（2）=（3.25+6.75）*36=360
（3）=18又2/3-1又1/3-(4.59+6.41)=17+1/3-10=7又1/3

追问

第四个呢？

追答

(4)=10又1/6-(2+5/6)=7又1/3
(3)18又2/3-1又1/3-(4.59+6.41)=17+1/3-11=6又1/3

Answer 3

（1）3/8=0.375，0.375×（5.6+5.4-0.9）
（2）（100×325×0.36+100×6.75×36 ）÷100
＝（325×36+675×36 ）÷100
＝36×（325+675）÷100
＝360
（3）18又2/3-（4.59+6.41）-1又1/3