﹣
= 
÷
= 
×27= 0×
+
=
= 5÷
= 
×75%= 0.36×
= 
+
×16=相关试题
口算
| 300×400= |
50×20= |
30×60= |
40×900= |
320×30= |
| 20×400= |
200×80= |
210×30= |
420×20= |
500×40= |
口算
| 300×400= |
50×20= |
30×60= |
40×900= |
320×30= |
| 20×400= |
200×80= |
210×30= |
420×20= |
500×40= |
+
）×3.6 3.7×
+1.3÷
4﹣
﹣
÷
﹣
×
+
x=
； x÷
=15×
； 40%x+
=
．
÷
=
=
×75%=
+
×
=
×15=
÷3=
=
×4﹣
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