口算：
165﹣127= 960÷3= 8400÷4= 580+700= 300×9=
700× =4200 ÷4=250 ×9=0 16+16÷4+12= 25÷（9﹣4）=
口算：
165﹣127= 960÷3= 8400÷4= 580+700= 300×9=
700× =4200 ÷4=250 ×9=0 16+16÷4+12= 25÷（9﹣4）=
+
= 39×
=
×
=
×0×12=
﹣
=
×3.6=
×
=
×
×
=
的
是多少？
与
的和的6倍是多少？
×39=
×
= 0.25×
=（
）2=
=
﹣
= 7.69﹣2.6= 3﹣
=
= ； 
= ；
= ．
=
=
=
=
=
=
=
=
粤公网安备 44130202000953号