77﹣53= 24+28= 400×8= 3200﹣700=
52+19= 97﹣43= 56÷7= 320+300=
34+56= 600×8= 34+8= 700+900=
45+37= 3000×4= 92﹣6= 47+35=
+
= 
﹣
= += 1﹣
=
77﹣53= 24+28= 400×8= 3200﹣700=
52+19= 97﹣43= 56÷7= 320+300=
34+56= 600×8= 34+8= 700+900=
45+37= 3000×4= 92﹣6= 47+35=+= ﹣= += 1﹣=
×
= 
×
= 
×
=
×
= 
×
= 
×
=
×30= 28×
= 
×
×
=
×
= 16×
= 
= 
×1100=
= 
×
= 
+
= 
×
×
=
×12= 
×
= 
﹣
= 0×
+
=
，这个数就缩小了10倍． ．
，乙数比甲数的倒数少
，这两个数的积是多少？
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