排一本600页的书的页码，共需要多少个数码“0”？
计算下列各题45+38= ÷3= 4.2÷0.07= 0.875×24= 1÷=72×= 8﹣= 0.25﹣= ×0÷= 13×÷13×=
7+68= 78﹣0.98= 910÷70= 32×12.5%=1÷0.03= 12﹣= ﹣= ÷=
直接写出得数．2502﹣197= 8.01﹣2.1= 2.5×40= 1÷=5.2÷0.125÷8= ﹣0.625= 8.4÷0.7= 124﹣124÷124=
直接写出得数587﹣364= 3.14×6= =1000÷125×8﹣1= 3.2÷= 1÷（）=
直接写出得数822﹣199= 1.87+5.3= 7÷1.4= 0.18×10=÷4= 1﹣= += 2.5×0.4=×= 36×25%=
÷3= 4.2÷0.07= 0.875×24= 1÷
=
= 8﹣
= 0.25﹣
= 
×0÷
= 13×
÷13×
= 
﹣
= 
÷
=
=
﹣0.625= 8.4÷0.7= 124﹣124÷124==﹣0.625= 8.4÷0.7= 124﹣124÷124=
=
= 1÷（
）=
÷4= 1﹣
= 
+
= 2.5×0.4=
×
= 36×25%=
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