12.5×4.8×0.25 的简便运算(小学题)
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/14 06:54:09
![12.5×4.8×0.25 的简便运算(小学题)](/uploads/image/z/134352-0-2.jpg?t=12.5%C3%974.8%C3%970.25+%E7%9A%84%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%97%EF%BC%88%E5%B0%8F%E5%AD%A6%E9%A2%98%EF%BC%89)
xRn@(RHxl#ءL\hc ,V,x+,,(H,"_1]qbJafs=hʂQ֫?O^:[WaW~x {,`yQA3fMҌ#dXDU EK6sptsc
ݞz ,'wMe*dzYzB
$iBG@M8r
;m%YD.aĩǴR-47RHz%$vC\\{z$(ERJ{2JeVoHbhU4RXuHN\=߆w.~~T_\>]yY~Ί̇Z/ֿxxClT:0u7{m00ta8ui C6%66 xjV3{0"1f|hskfMb@mKs~L
12.5×4.8×0.25 的简便运算(小学题)
12.5×4.8×0.25 的简便运算(小学题)
12.5×4.8×0.25 的简便运算(小学题)
12.5×4.8×0.25
=12.5x0.8x6x0.25
=10x1.5
=15
12.5x4.8x0.25
=12.5x0.8x6x0.25
=10x1.5
=15
=(0.25×1.2)×(4×1.25)
=0.3×5
=1.5
=60X0.25
=15
利用乘法分配率可得
(12.5+1.25)*0.8
=12.5*0.8+1.25*0.8
=10+1
=11
12·5×(4+0·8)×0·25=12·5×4+0·8×0·25=50+0·2=50·2
12.5x4.8x0.25
=12.5x(4+0.8)x0.25
=(12.5x4+12.5x0.8)x0.25
=(50+10)x0.25
=15
=(5x2.5)x(4x1.2)x0.25=(5x1.2)x(4x0.25)x2.5=6x1x2.5=15