简算:0.98*42 简算:8.4*0.26+0.27
问题描述:
简算:0.98*42 简算:8.4*0.26+0.27
答
你好
0.98*42
=(1-0.02)*42
=1*42-0.02*42
=42-0.84
=41.16
8.4*0.26+0.27
=2.184+0.27
=2.454
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