学校买回一批书，按4：5放在甲、乙两个书架里．如果从甲书架借出25本，这时甲架的书是乙个书架的．原来甲、乙书架各放多少本书？
直接写出得数． 1.2+3.58= 400÷25÷8== 0.9+99×0.9== 69×=×8÷=（）×4=
直接写出得数． ①×1.6= ②0.8÷0.01= ③3.6÷40= ④÷= ⑤+6.25= ⑥0.74×100= ⑦0.375÷= ⑧40×101=
直接写出得数 2008﹣123= 8.2+1.18= 2.5×4=+×9= 9.8÷0.1=×= 3××=÷×=
直接写得数﹣=×=+= 1.03+0.07= 1÷0.4=×25%= 0.05×100= 0.6：0.36=
直接写出得数： 2.2+3.5= 0.4×30= 8÷1.6= 8.2十1.8= 4.43+5.57= 8.4÷0.6= 3.5﹣1.5= 1.25×5×8===
．原来甲、乙书架各放多少本书？
= 0.9+99×0.9=
= 69×
=
×8÷
）×4=
×1.6= ②0.8÷0.01= ③3.6÷40= ④
÷
=
+6.25= ⑥0.74×100= ⑦0.375÷
= ⑧40×101=
+
×9=
×
= 3×
×
=
÷
×
=
﹣
=
×
=
= 1.03+0.07=
×25%= 0.05×100= 0.6：0.36=
=
=
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