口算．
40×50= 180÷3= 25×40= 84÷4= 3600÷4= 16×50=
140÷2= 16×30= 0.3+0.6= 1﹣0.3= 0.7+0.9= 1.6﹣0.8=
相关试题
口算．
40×50= 180÷3= 25×40= 84÷4= 3600÷4= 16×50=
140÷2= 16×30= 0.3+0.6= 1﹣0.3= 0.7+0.9= 1.6﹣0.8=
×
=
×
×
=
×
= 5×
=
×21=
×
=
×
=
×
=
×
=
= 1﹣
﹣
﹣
= 0.33+0.77=
×
= 18.84÷3.14=（
+
）×6=
+
=
=
×
=
﹣
=
×
×
=
×75=
×
=
×
=
×
=
×（1﹣
）=
= ； 1÷
×2= ；
= ；（
）×8= ；
= ；
= ；
= ；
= ；
= 5
；
= ； 30÷25%= ； 3﹣1.03= ．
+
=
﹣
=
×
=
﹣
×
=
×
=
×
=
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