10÷0.01=
0.22+0.8=
10﹣2.05=
3.5×0.4=
4÷0.25=
0÷19.8=
0.2×0.05=
0.6×1.5=
1.36+2.87+3.64=
1.8×0.4×0.25=
10÷0.01=1000
0.22+0.8=1.02
10﹣2.05=7.95
分解因式:4ax2﹣ay2=____ .
如图的两个四边形相似,则∠α的度数是( )
The giraffe is _____.
为了验证锌、铁、铜、银的金属活动性顺序,某同学进行如图所示的实验.