8.28-2.82×0.7 +0.3简便计算?
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简便计算
8.28-2.82×0.7 +0.3
=(8.28+0.3)-1.974
=8.58-2+0.026
=6.58+0.026
=6.606
8.28-2.82×0.7 +0.3
=(8.28+0.3)-1.974
=8.58-2+0.026
=6.58+0.026
=6.606
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展开全部
8.28-2.82×0.7 +0.3
=(8.28+0.3)-1.974
=8.58-1.974
=6.606
=(8.28+0.3)-1.974
=8.58-1.974
=6.606
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=8.28+0.3-1.974
=8.31-1.974
=6.336
=8.31-1.974
=6.336
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