2.56dm =________mm 0.25m =_________μm =________nm 15min =_________S =________h1.5h =________min =_______s
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2.56dm=________mm0.25m=_________μm=________nm15min=_________S=________h1.5h=________min=_______s2.56
2.56dm =________mm 0.25m =_________μm =________nm 15min =_________S =________h1.5h =________min =_______s
2.56dm =________mm 0.25m =_________μm =________nm 15min =_________S =________h
1.5h =________min =_______s
2.56dm =________mm 0.25m =_________μm =________nm 15min =_________S =________h1.5h =________min =_______s
2.56dm =256mm
0.25m =25000μm =25000000nm
15min =90S =0.25h
1.5h =90min =5400s
2.56dm =________mm 0.25m =_________μm =________nm 15min =_________S =________h1.5h =________min =_______s
360cm的3次方=_________m的3次方=________mm的3次方
1m=( )dm
3m=( )dm
2m=[ ]dm
3.2m= dm
16.2m=( )dm?
0.5dm=?cm
650dm= m,1970dm= m,6530m= dm,3.201m= dm,800dm=
如图,已知零件的外径为25mm,现用一个交叉卡钳（两条尺长AC和BD相等,OC=OD）量零件的内孔直径AB．若OC：OA=1：2,量得CD=10mm,则零件的厚度x= ________mm
、图中,管内水银柱h＝5cm,大气压强为760mm汞柱,那么图示各情况中,管内封闭端空气柱的压强分别是：（a）________mm汞柱；（b）________mm汞柱；（c）________mm汞柱；（d）________mm汞柱．（e）________m
4m=( )dm,1.2m=( )dm
0.28dm=（ ）dm 括号里填几分之几
580dm³=（）dm³（）cm³
8.006dm³=()dm³()cm³
30.6dm³=()dm³()cm³
dm代表什么单位数学题,700cm=()dm
5.34dm³=（）dm³（）cm³