题文
口算:
199+99= 70﹣25= 120÷12= 25×5=
4.6+0.04= 2.5﹣1.5= 6.3÷2.5= 5×0.8=
+
=
﹣
=
×
=
÷
=
口算:
199+99= 70﹣25= 120÷12= 25×5=
4.6+0.04= 2.5﹣1.5= 6.3÷2.5= 5×0.8=
+
=
﹣
=
×
=
÷
=
试题篮
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