连一连． 39÷2 44÷3 22÷7 70÷4．
直接写得数：1﹣= ×= ÷2÷= 2×80%=+= 15÷= 35×= ×÷×=
直接写出得数．﹣= ×= 12×= 1÷== = 1.6×4×0.25= 0÷=
直接写得数．+= ÷6= ×= 2﹣+=×16= 6﹣= ÷= 5×÷5×=
直接写得数．= == == 75%÷25%== =
= = = == = = == = = =
= 
×
= 
÷2÷
+
= 15÷
= 35×
= 
×
÷
=
﹣
= 
×
= 12×
= 1÷
=
= 
= 1.6×4×0.25= 0÷
=
+
= 
÷6= 
×
= 2﹣
+
=
×16= 6﹣
= 
÷
= 5×
÷5×
= 
=
= 
=
= 75%÷25%=
= 
=
= 
= 
= 
=
= 
= 
= 
=
= 
= 
= 
=
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