2÷3= 12÷30= 15÷7= 28÷54= 42÷14=
直接写得数．×16= 12÷= 0.3×= ÷=1÷= ×÷= ×÷×= 0×+=﹣= += ×= ÷=
5×= 11×1= ÷4= 9×4.5+4.5= ÷= 1=×27= 5.6+8×1= 8×4= 12÷6= 3﹣1= 5﹣2+=
直接写出得数×= ×= ÷3= 16×= +=×÷= ×÷×= 1÷3×= ÷= 5÷﹣5÷=
直接写得数14×= ×= ÷4=×= ×7+= ×3÷×3=
× ÷10 ÷×14× ÷÷ ÷×3．
×16= 12÷
= 0.3×
= 
=
= 
×
÷
×
÷
×
+
=
﹣
= 
+
= 
×
= 
÷
=
= 11×1
= 
÷4= 9×4.5+4.5= 
÷
= 1
=
×27= 5.6+8×1
= 8×4
= 12
÷6= 3
﹣1
= 5﹣2
+
=
×
= 
×
= 
÷3= 16×
= 
+
=
×
÷
= 
×
÷
÷
= 5÷
﹣5÷
= 
×
= 
÷4=
×
= 
×7+
×3÷
×
÷10 
÷
×14×
÷
÷
÷
×3．
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