8.02+9.8×6.25-6.25÷2.5简便算法

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8.02+9.8×6.25-6.25÷2.5简便算法
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8.02+9.8×6.25-6.25÷2.5简便算法
8.02+9.8×6.25-6.25÷2.5简便算法

8.02+9.8×6.25-6.25÷2.5简便算法
=8.02+9.8*6.25-6.25*0.4
=8.02+6.25*(9.8-0.4)
=8.02+6.25*9.4
=8.02+58.75
=66.77

8.02+9.8×6.25-6.25÷2.5
=8.02+6.25*(9.8-0.4)
=8.02+6.25*(10-0.6)
=8.02+62.5-3.75
=70.52-3.75
=66.77

8.02+9.8×6.25-6.25÷2.5
=8.02+9.8*6.25-6.25*0.4
=8.02+6.25*(9.8-0.4)
=8.02+6.25*9.4
=8.02+6.25*(10-0.6)
=8.25+62.5-3.75
=(8+62-3)+(0.25+0.5-0.75)
=67