5.4×0.01=____
0.125×0.8=____
0.27÷0.03=____
1.8÷0.3=____
500×0.2=____
0.56÷0.4=____
1.25×17×0.8=____
0.01÷0.1=____
0.37×0÷9.54=____
0.55÷0.11=____
如图,已知∠A=∠F,∠C=∠D,试说明BD∥CE.
解:∵∠A=∠F(已知)
∴AC∥DF(____)
∴∠D=∠____ (____)
又∵∠C=∠D(已知)
∴∠1=∠C(等量代换)
∴BD∥CE(____)