53.6+1.9-51.3+8.02的简便计算?
3个回答
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53.6+1.9一51.3+8.02
=53.6一51.3+(1.9+8.02)
=2.3+9.92
=2.3+10一0.08
=l2.3一0.08
=12.22
=53.6一51.3+(1.9+8.02)
=2.3+9.92
=2.3+10一0.08
=l2.3一0.08
=12.22
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展开全部
53.6+1.9-51.3+8.02
=53.6-51.3+8.02+1.9
=3.3+8.02+2-0.1
=13.22
=53.6-51.3+8.02+1.9
=3.3+8.02+2-0.1
=13.22
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简算:
53.6+1.9-51.3+8.02
=(53.6-51.3)+1.9+8.02
=2.3+1.9+8.02
=4.2+8.02
=12.22
运用了加法结合律
53.6+1.9-51.3+8.02
=(53.6-51.3)+1.9+8.02
=2.3+1.9+8.02
=4.2+8.02
=12.22
运用了加法结合律
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