直接写得数．1÷3= 4.5×60= 14+4.5= 0.25×40= 102=85÷0.1= 10﹣0.29= 3÷15= 0.6×5= 0.13=
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++﹣+﹣+﹣．
1﹣．
直接写得数．+ 2+ 1﹣++ 3﹣+﹣﹣﹣．
==+=1﹣= ﹣ +=1+ = 1﹣ =．
=
=
=
=
=
=
=
=
=
+
+
﹣
+
﹣
+
﹣
．
．
+
2+
1﹣
+
+
+
﹣
﹣
﹣
=
=
+
=1﹣
=
+
=1
+ =
1﹣ =
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