A:4:5
B:16:25
C:196:225
D:256:625
If the new safety system _______ to use, the accident would never have happened.
我能填得准.
32.64去掉小数点,得到的新数比原来的数____倍.
下列说法错误的是( )
254×36=
315÷70=
*580×12=
380÷70=
46×205=
*297÷59=
762÷38=
207×40=
*752÷26=