相关试题
650+350= 7000﹣320= 1﹣
= 63÷8= 660÷3=
600×7= 
+
= 34÷7= 120×4= 270+90=
﹣
= 6×6+5= 740﹣700= 3200÷8= 
+
=
650+350= 7000﹣320= 1﹣= 63÷8= 660÷3=
600×7= += 34÷7= 120×4= 270+90=﹣= 6×6+5= 740﹣700= 3200÷8= +=
．
=
= 490﹣360= 320+140= 45×8=
=
+
= 
﹣
= 78×2≈ 49×3≈ 502×6≈ 193×5≈
+
= 1﹣
= 
﹣
= 1﹣
= 
+
+
=
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