直接写得数．
300+200= 300﹣30= 515+85= 768﹣500=
410+127= 32÷8= 63÷9= 310﹣130=
20﹣15÷3= 7×6+23= （71﹣35）÷6= 590﹣（420+90）=
相关试题
直接写得数．
300+200= 300﹣30= 515+85= 768﹣500=
410+127= 32÷8= 63÷9= 310﹣130=
20﹣15÷3= 7×6+23= （71﹣35）÷6= 590﹣（420+90）=
=
=
=
=
= 0.8
= 1÷
= 1﹣
﹣
=
×12=
÷
=（3
+
）×0=
+
=
×
=
÷
=
÷3=
+
=
=1﹣
÷
= 1000×10%×100%=
÷3= 20×
=
÷4= 1﹣
﹣
=
÷
=
÷
=
×
=
﹣
=
×
=
=
÷
=
÷
=
÷
= 1÷
=
×
= 7+
=
=（2）6÷
=（3）
=（4）
=
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