
5.3-(4.98-0.7)怎样简便计算
2个回答
展开全部
5.3-(4.98-0.7)
=5.3-(5-0.02-0.7)
=5.3-5+0.02+0.7
=0.3+0.02+0.7
=0.3+0.7+0.02
=1+0.02
=1.02
=5.3-(5-0.02-0.7)
=5.3-5+0.02+0.7
=0.3+0.02+0.7
=0.3+0.7+0.02
=1+0.02
=1.02
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