直接写出得数．
20×7= 23×4= 54÷6= 250÷5= 50×2=
50×80= 22×30= 21×60= 720÷90= 360÷60=
20×40= 420÷70= 70×110= 270÷30= 140÷20=
130×5= 560÷80= 420÷60= 810÷90= 360÷9=
相关试题
直接写出得数．
20×7= 23×4= 54÷6= 250÷5= 50×2=
50×80= 22×30= 21×60= 720÷90= 360÷60=
20×40= 420÷70= 70×110= 270÷30= 140÷20=
130×5= 560÷80= 420÷60= 810÷90= 360÷9=
= ．
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+
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= 1+
=
﹣0.2=
+0.3=
+
= 1﹣
+
=
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+
+
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=
=
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= 2x+x=
= 24×5﹣25×4= 8×13×25=
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