按要求画图，并用字母标出圆心、半径和直径．（1）半径是2cm （2）直径是1.5cm．
直接写出得数．×=÷=÷= 1.8÷= 0.2÷3=÷=×=××0=×÷×= 18÷÷=
你能直接写出下列各题的结果吗？试试看×=÷=××= 4.5%=×12=÷4= （+）×== %
计算．×÷÷××÷6×÷7÷．
直接写得数．= 24÷======
直接写出得数． 12×=÷= 0÷=﹣= 12×（×）=×=÷= 20÷=+=×90×=
×
=
÷
=
÷
= 1.8÷
= 0.2÷3=
÷
=
×
=
×
×0=
×
÷
×
÷
=
×
=
÷
×
×
= 
×12=
÷4= 
+
）×
=
= %
×
÷
÷
×
×
÷6×
÷7÷
．
= 24÷
=
=
=
=
=
=
=
÷
= 0÷
=
﹣
= 12×（
×
×
=
÷
= 20÷
=
+
=
×90×
=
粤公网安备 44130202000953号