同学们上体育课，有10个男生排成一排，相临两个男生相隔1米．问这排男生排列的长度有多少米？
直接写出复数．+0.125= 4×÷4×=﹣= 0.1×10÷0.1×10= 2.5×40=﹣×= 36：0.8= 8.9×11﹣8.9=÷= 10÷0.1×10=
①=②=③= ④= ⑤= ⑥=⑦=⑧= ⑨= ⑩= ．
直接写出得数．+=﹣= 3×=÷=+=÷= 1﹣=×=
直接写出得数．==== 2÷3====
+=﹣=×= 14÷=÷=×=÷= 6×=
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+0.125= 4×
÷4×
﹣
= 0.1×10÷0.1×10= 2.5×40=
﹣
×
÷
= 10÷0.1×10=
=②
=③
= ④
= 
= ⑥
=⑦
=⑧
= 
= ⑩
= ．
+
=
﹣
=
÷
=
+
=
÷
= 1﹣
=
×
=
=
=
=
=
=
=
=
+
=
﹣
=
= 14÷
=
÷
=
×
=
÷
= 6×
=