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=
=
= 25%+
=
）×（
﹣
）=
= 1.75﹣（0.75+
）= 3.14×9=
=
÷
=
+
）= 9
÷9=
÷
÷7=
×
=
÷
= 5.6+3.99=
= 4×
×
=
÷
= 6.4×0.5=
﹣
=
÷
=
×
=
﹣
=
÷4=
+
+
= 1
﹣
﹣
=
粤公网安备 44130202000953号