口算．
25×4= 20×300= 2400÷40= 3200+800= 39万+12万=
80万﹣27万= 0÷99= 40×70= 690000﹣270000= 450000+580000=
相关试题
口算．
25×4= 20×300= 2400÷40= 3200+800= 39万+12万=
80万﹣27万= 0÷99= 40×70= 690000﹣270000= 450000+580000=
=
=
= 10﹣8.9=
）×24= 42÷
= 2.7×
= 5.2÷10%=
﹣
= 8.73+27=
×3=
×
=
= 5﹣
= 8.4÷0.7= 0.75÷
=
×
=
+
= 2.78+2.12= 1.25×8=
=
﹣
=
÷
= 81÷0.3=
×45=
+
= 6.3÷0.01= 2.5+1.25= 6﹣
﹣
=
÷
= 390×0.02= 510﹣240= 0.13= 10×
÷10×
=
﹣
=
+
=
×
=
÷
=
×
= 1﹣
=
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