小青用ll0粒种子做发芽实验，其中有10粒未发芽，发芽率是多少？（百分号前保留一位小数）
直接写得数
×4=6﹣
=
÷
= 6÷1%=
×0÷
= 1÷
=
×
= 10+
×
=
0.99×9+0.99=
×5×7=
直接写得数．
10÷1%= 6.3×
= 0×3.5= 4.2÷
=
1.125×8=
÷
= 12﹣9.8= 3.6×2.5=
1.25×
×8=×2÷×2=
390×0.02=
﹣
= 5﹣1.4﹣1.6= 0.9﹣0.26=
81÷
= 4×（0.6+1.9）= 0.23×400=
×
=
﹣
+
= 0.9+99×0.9=
口算．
1.4×3=
=
= 1.8+0.32=
= 36.1÷5.9≈ 298×31≈ 499+203≈
直接写出下面各题的结果．
28×2= 1.8+2.9= 4.8÷12= 10﹣0.9=
0.25×4=
﹣
=
+
=
×
=
1﹣75%=
÷
=