如图中长方形的周长是20cm,计算平行四边形的面积.
直接写出得数.
(1)+
=(2)1÷
=(3)
×26=(4)
÷
=
(5)﹣
=(6)12÷
×0=(7)2+
=(8)
×
=
(9)+
+
=(10)
×
×5=
直接写得数.+
= 1﹣
=
+
=
﹣
=
1﹣28%=×16=
×
= 36÷
=
÷
= 25×40%=
直接写出得数.
40×0.25= 1.25×0.8= 0.1÷0.01= 0.6+1.9=
3.5﹣2.25= 12.8÷4=+
=
﹣
=
12×= 1÷
=
×
=
÷
=
直接写出得数
1﹣0.375= 0.125×8= 280﹣45= 1.3÷0.25=
400÷600= 8.64×100=+
=
﹣
=
×
=
÷
= 12×
= 6÷
=
直接写出得数
0.5×400= 568﹣198=÷
=
1÷﹣
÷1=
×12= 1.7+3.03=
13.5﹣5= 10﹣﹣
=