将一个高18.84厘米的圆柱侧面展开,得到一个正方形,圆柱的底面积是多少平方厘米?
直接写出得数2.1+0.03= 2.1﹣0.03= 2.1×0.03= 0.52=1.5×0.8= 2.1÷0.03= 0.56÷0.7= 1.5×2÷1.5×2=
列竖式计算(除不尽的用循环小数表示)42.8+85.42=150×0.28=4.2÷0.25=3.6×0.25=14.2÷11=12.48÷2.4=
直接写出得数.13.4﹣8= 5.6+4= 23+4.7= 10﹣2.3= 5×4=2.3×4×0= 100÷40= 3.5÷5= 6﹣0.23= 0.34+0.45=0.06×0.7= 0.05×1.6=
直接写得数.10÷0.01= 0.22+0.8= 10﹣2.05= 3.5×0.4= 1.8×0.4×0.25=4÷0.25= 0÷19.8= 0.2×0.05= 0.6×1.5= 1.36+2.87+3.64=
5.5×2= 9.6÷4.8 =3﹣1.5×2= 2×3.1=2.4×0.5= 0.125×8﹣0.1= 0.48÷6= 6.4﹣4=0.6÷3+3= 0.91÷13= 3.25+0.75= 9.9﹣0.9÷0.1=2.5×3= 4.4÷(5×0.2)= 7×1.3= 0.96÷0.06=0.36×0.3= 0.35÷0.7= 4×0.8×0.25×1.25= 13+0.7÷0.7=