5×0.35=
0.39÷0.001=
2.5×5×4=
1.2x×4=
7.9×100=
0.23=
1.2×4÷1.2=
4.3a-1.2a=
10.8-10.8÷2.5 6.7×5.5+5.5×17.3 16.2+(48.6+5.4)×0.5
5a+6a=
a×9=
b×b=
1×m=
17c-11c=
9x+x=
a×a×5=
2m+5m-3m=
方法一:
方法二:
4÷2.5=
4÷1=
4÷0.5=
3.6÷1.2=
3.6÷1=
3.6÷0.6=
20
16
14