列式计算：（1）8个380是多少？（2）比349多176的数是多少？（3）一个数加上236是800，这个数是多少？
口算×6=+=×=×6=÷=÷= 1﹣=﹣=×4=÷=
直接写得数．×= 0×=÷=÷4= 12÷= 0.3×=×÷×= 0×+=
直接写出得数 21×=÷2=×=÷=÷= 12÷= 1÷=×0=
直接写得数． 20×=÷=×=÷6=×12=×=
直接写得数．×=﹣=×=×=÷=÷=÷=÷=
×6=
+
=
×
=
×6=
÷
=
÷
= 1﹣
=
﹣
=
×4=
÷
=
×
= 0×
=
÷
=
÷4= 12÷
= 0.3×
=
×
÷
×
= 0×
+
=
=
÷2=
×
=
÷
=
÷
= 12÷
= 1÷
=
×0=
=
÷
=
×
=
÷6=
=
×
﹣
=
×
=
×
=
÷
=
÷
=
÷
=
÷
=
粤公网安备 44130202000953号