打电话时，国内长途每分0.7元，国际长途每分7.2元．看下图，算算他们谁打电话的时间长．
直接写出得数．
﹣
=12﹣0.12= 5.8+8= 48+32=
32= 0÷
= 4÷4%= 0.6×0.5= 
×
=
+
=1÷
=
+5= ．
+
= 24×
= 5﹣
=
÷
= 40×
=×0.5= 0.4÷
=
﹣
=
÷0.4=
+
=
直接写出结果．
﹣
= 4.5×102= 341﹣103= 270÷18=
10×10%= 5﹣0.25+0.75= 0.42﹣0.32= 2÷
=
×6= 4.57+6.43= 7×
÷7×= 1÷
×
=
直接写出得数．
382﹣297﹣3=
= 2÷
=
=
4﹣6= 4.98+0.02= 1÷0.01=（
）×72=
25÷5=
=
直接写出结果．
960÷30= 1.5×40=60 9﹣3.4= 15÷2.5÷4=
×25=
÷
=
+
= 1﹣
+
=