问题
解答题
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答案
+2 5
=1 5
,43×200=8600,1-3 5
=7 8
,350+50=400,1 8
630÷7=90,15×6÷9=10,
+8 9
=1,45-9×5=0.1 9
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+2 5
=1 5
,43×200=8600,1-3 5
=7 8
,350+50=400,1 8
630÷7=90,15×6÷9=10,
+8 9
=1,45-9×5=0.1 9